a. Present the change in the inflation rate with respect to the previous month and the previous year.

b. Highlight the lines of the price index that have experienced the greatest change in the report

c. Show the purchasing power of the dollar.

Table 1. Consumer Price Index and Purchasing Power for all Families in Puerto Rico for September 2021 and other selected dates Septiembre de 2021 desde: Diciembre 2006=100 Percent change to December 2006=100 September 2021 from: Todos los Grupos Septiembre Agosto Septiembre Agosto Septiembre All Items September August September August September 2021 2021 2020 2021 2020 122.831 122.489 118.663 0.3 3.5 Diciembre 2006=$1.00 Poder adquisitivo del Septiembre Agosto Septiembre Cambio Total Purchasing power of dolar del consumidor September August September Total Change the consumer dollar 2021 2021 2020 $0.81 $0.82 $0.84 -$0.01 -$0.03Table 2. Consumer Price Index for all families in Puerto Rico by groups of items and percent changes Between September 2021 and other selected dates indices - Indexes Porcentajes de cambio hasta Diciembre 2006=100 Septiembre de 2021 desde: December 2006=100 Percent changes to September 2021 from: Septiembre Agosto Septiembre Agosto Septiembre September August September August September 2021 2021 2020 2021 2020 TODOS LOS GRUPOS 122.831 122.489 118.663 0.3 3.5 ALL ITEMS Alimentos y Bebidas 135.674 134.319 130.416 1.0 4.0 Food and Beverages Alimentos en General 135.821 134.416 130.018 1.0 4.5 Food Alimentos consumidos en el hogar 133.408 132.052 127.125 1.0 4.9 Food at home Cereales y productos de cereales 129.005 128.296 124.234 0.6 3.8 Cereals and cereal products Productos horneados 147.248 147.139 142.395 0.1 3.4 Bakery products Carnes, aves, pescado y huevos 135.816 133.306 123.881 1.9 9.6 Meats, poultry, fish, and eggs Leche y productos relacionados 139.101 138.582 136.463 0.4 1.9 Dairy and related products Frutas y vegetales 113.767 113.012 110.489 0.7 3.0 Fruits and vegetables Bebidas sin alcohol y materiales para Nonalcoholic beverages and beverage bebidas 130.290 128.634 127.162 1.3 2.5 materials Otros alimentos para consumo en el hogar 138.082 137.441 132.569 0.5 4.2 Other food at home Azucares y endulza dores 138.296 138.630 133.161 -0.2 3.9 Sugar and sweetsGrasas, aceites, yaderezos 149.292 146.586 136.698 1.8 9.2 Fats, oils and dressings Otros alimentos 129.878 130.146 129.244 -0.2 0.5 Other foods Alimentos consumidos fuera del hogar 141.155 139.557 136.059 1.1 3.7 Food away from home Bebidas Alcoholicas 118.807 118.573 117.929 0.2 0.7 Alcoholic Beverages Alojamiento 117.327 116.888 115.757 0.4 1.4 Housing Albergue 121.825 121.477 120.697 0.3 0.9 Shelter Alquiler de la residencia primaria 119.596 119.217 118.953 0.3 0.5 Rent of primary residence Alojamiento fuera del hogar 140.498 154.514 112.065 -9.1 25.4 Lodging away from home Alquiler equivalente de la vivienda poseida 122.194 121.674 121.299 0.4 0.7 Owners' equivalent rent of primary residence Seguros de la vivienda o de inquilinos 100.000 100.000 100.000 0.0 0.0 Tenants' and household insurance Combustible y Otras Utilidades 109.318 108.905 108.132 0.4 1.1 Fuels and Utilities Combustible para la vivienda 131.825 124.505 110.774 5.9 19.0 Fuels Electricidad 92.386 92.386 92.386 0.0 0.0 Electricity Agua, alcantarillados y limpieza de pozos Water and sewerage services and cleaning septicos 145.249 145.249 145.261 0.0 0.0 of septic tanks Enseres y Servicios del Hogar 110.255 109.494 107.299 0.7 2.8 Housefurnishings and Services Articulos, enseres, equipos y mobiliarios 107.993 107.057 104.792 0.9 3.1 Housefurnishings Servicios para el Hogar 124.920 124.920 121.511 0.0 2.8 Household servicesTable 2. Consumer Price Index for all families in Puerto Rico by groups of items and percent changes Between September 2021 and other selected dates indices - Indexes Porcentajes de cambio hasta Diciembre 2006=100 Septiembre de 2021 desde: December 2006=100 Percent changes to September 2021 from: Septiembre Agosto Septiembre Agosto Septiembre September August September August September 2021 2021 2020 2021 2020 Ropa 84.606 84.624 83.667 0.0 1.1 Apparel Ropa de hombres y ninos 88.050 88.597 86.767 -0.6 1.5 Men's and boy' Ropa de mujeres y ninas 73.662 72.657 73.059 1.4 0.8 Women's and girls' apparel Ropa de bebe y de infantes 102.144 102.339 99.278 0.2 2.9 Infant's and toddlers' apparel Calza do 82.190 83.001 80.189 -1.0 2.5 Footwear Relojes y joyeria 110.441 111.491 111.917 0.9 -1.3 Watches and jewerly Transportacion 116.437 116.921 107.797 0.4 8.0 Transportation Transportacion Privada 117.450 117.371 109.079 0.1 7.7 Private Transportation Vehiculos de motor nuevos y usados 105.312 105.344 103.001 0.0 2.2 New and used motor vehicles Combustible para motores y otros 146.239 145.667 111.161 0.4 31.6 Motor fuel Piezas y equipos para vehiculos de motor 137.406 138.303 128.645 -0.6 6.8 Motor vehicle parts and equipment Mantenimiento y reparacion de vehiculos de motor 133.148 133.041 131.113 0.1 1.6 Motor vehicle maintenance and repairTransportacion Publica 71.058 87.748 53.586 -19.0 32.6 Public Transportation Cuidado Medico 157.354 157.291 156.657 0.0 0.4 Medical Care Productos de cuidado medico 160.434 160.254 160.157 0.1 0.2 Medical care commodities Servicios profesionales 114.927 114.927 114.235 0.0 0.6 Professional services Hospitales y servicios relacionados 173.623 173.623 172.592 0.0 0.6 Hospital and related services Entretenimiento 115.572 115.480 112.702 0.1 2.5 Recreation Articulos de entretenimiento 109.053 108.945 107.006 0.1 1.9 Recreation goods Servicios para el entretenimiento 152.290 152.290 144.789 0.0 5.2 Recreation services Educacion y Comunicacion 120.823 120.487 118.039 0.3 2.4 Education and Communication Educacion 139.653 139.088 134.093 0.4 4.1 Education Libros y materiales educativos 113.032 110.623 112.998 2.2 0.0 Educational books and supplies Matricula, mensualidad y cuido de ninos 147.807 147.807 140.555 0.0 5.2 Tuition, other school fees, and childcare Comunicacion 102.388 102.276 102.321 0.1 0.1 Communication Servicios telefonicos 104.223 104.088 104.449 0.1 -0.2 Telephone services Correo, servicios de entrega y servicios Postage and delivery services and informativos 89.117 89.173 86.924 -0. 1 2.5 information services Otros Articulos y Servicios 125.138 124.958 123.315 0.1 1.5 Other Goods and Services Tabaco y productos relacionados 224.189 223.203 220.064 0.4 1.9 Tobacco and related products Cuidado personal 106.590 106.517 105.216 0.1 1.3 Personal care Otros gastos 102.750 104.933 100.531 -2.1 2.2 Other expenses