Figures in constant (2020) US$ are present according to calendar year, calculated on the assumption that, where financial years do not correspond to calendar years, spending is distributed evenly through the year
| 1970 | 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| كزاخستان | 227 | 624 | 1,079 | 1,189 | 1,387 | 1,565 | 1,560 | 1,356 | 1,302 | 1,403 | 1,831 | 1,548 | 1,542 | |||
| كيرغيزستان | 54 | 59 | 76 | 74 | 91 | 97 | 107 | 111 | 118 | 119 | 122 | 124 | 131 | 120 | ||
| أذربيجان | 208 | 447 | 1,616 | 3,075 | 3,191 | 3,227 | 3,239 | 3,442 | 2,296 | 1,676 | 1,763 | 1,905 | 2,238 | 2,589 | ||
| تركيا | 2,138 | 7,251 | 11,371 | 9,238 | 9,942 | 10,027 | 10,273 | 10,551 | 10,628 | 10,936 | 12,822 | 13,762 | 17,467 | 18,568 | 17,478 | 16,709 |