Questions 9 through 13 (including the part "just for practice") consider the following table Year Nominal GDP Price Index Real GDP (in 2020 prices) 2020 1500 100 1500 2021 1612 104 ? 2022 1802 ? 1700 2023 ? 111 1650 9. Real GDP (RGDP) for 2021 in 2020 prices for this economy is (a) 1514.01 (b) 1550 (c) 1612 (d) 1676.5 10. The price index in 2022 for this economy is (a) 106 (b) 110.24 (c) 107.5 (d) 94.34 11. Nominal GDP (NGDP) in 2023 for this economy is (a) 1486.5 (b) 1661.4 (c) 1992 (d) 1831.5 12. The rate of growth of Real GDP (gRGDP) for this economy in 2021 relative to 2020 is (a) 3.33% (b) 7.47% (c) 11.77% (d) 6.66% 13. In which year(s) did this economy's aggregate output increase (relative to the previous year)? (a) In 2021 only (b) In 2022 only (c) In 2021 and 2022 only (d) In all years (2021, 2022 and 2023)