how to answer.

CPI for All Urban Consumers (CPI-U) Series Id: CUUROOOOSAOLIE Not Seasonally Adjusted Series Title: All items less food and energy in U.S. city average, all urban consumers, not seasonally adjusted Area: U.S. city average Item: All items less food and energy Base Period: 1982-84=100 Download: x xisx Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual HALF1 HALF2 2000 178.8 179.5 180.5 180.9 180.9 181.0 181.3 181.7 182.3 182.8 183.0 182.8 181.3 180.3 182.3 2001 183.5 184.4 185.3 185.6 185.5 185.9 186.2 186.6 187.1 187.6 188.1 187.8 186.1 185.0 187.2 2002 188.2 189.2 189.8 190.3 190.2 190.1 190.3 191.0 191 3 191.8 191.8 191.4 190.5 189.6 191.3 2003 191.8 192.5 193.0 193.1 193.2 193.0 193.2 193.5 193.6 194.3 193.9 193.6 193.2 192.8 193.7 2004 194.0 194.9 196 1 196.5 196.5 196.6 196.6 196.8 197.4 198.2 198.1 197.8 196.6 195.8 197.5 2005 198.4 199.5 200.7 200.9 200.8 200.6 200.8 201.0 201.3 202.3 202.3 202.1 200.9 200.2 201.6 2006 202.6 203.6 204.9 205.5 205.7 205.9 206.2 206.7 207.2 207.8 207.6 207.3 205.9 204.7 207.1 2007 208.009 209.112 209.923 210.311 210.316 210.474 210.756 211.111 211.628 212.318 212.435 212.356 210.729 209.691 211.767 2008 213.138 213.866 214.856 215.059 215.180 215.553 216.045 216.476 216.862 217.023 216.690 216.100 215.572 214.610 216.533 2009 216.719 217.685 21 18.433 220.037 2010 220.086 220.502 221.059 22 2011 222.177 223.011 223.69 225. 2012 227.237 227.865 22 229.893 2013 231.612 232.432 233.792 2014 235.367 236.075 236.913 237.509 238.029 238.157 138 238.296 238.841 239.413 237.008 38.785 2015 239.248 240.083 241.067 241.802 242.119 242.354 242.436 242.651 243.359 243.985 241.112 243.381 2016 244.528 245.680 246.358 246.992 247.5 4 247.794 247. 134 247.602 246.483 248.722 2017 250.083 251.143 251.290 251.642 251.335 253.004 2018 254.638 255.783 256.610 257.025 257.469 65 256.537 258.593 2019 260.122 261.114 261 836 262.332 262.590 1 261.862 264.560 2020 266.004 267.268 267.312 266.089 265.799 266.462 268.923 2021 269.755 270.6962A. Why would we exclude the prices of food items and energy when calculating the CPI? (5) 4 2B. What does the Base Period: 1982-84 = 100 mean? (5) 2C. Using the formula you used for the answer in Question 1C, what is the percent increase in the CPI from 2019 and 2009? USE ANNUAL FIGURES in your calculation. SHOW YOUR WORK. (10 points)