| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Armenia | 2.6 | 2.5 | 2.8 | 2.8 | 2.9 | 2.9 | 2.9 | 3.0 | 2.9 | 3.0 | 3.0 | 3.1 | |||
| Belarus | 2.9 | 3.3 | 4.6 | 4.7 | 4.7 | 4.9 | 5.1 | 4.3 | 4.3 | 4.4 | 4.4 | 4.5 | |||
| Kazakhstan | 3.9 | 3.2 | 3.5 | 3.8 | 3.9 | 3.8 | 3.9 | 3.9 | 3.9 | 4.1 | 3.9 | 3.9 | 3.9 | 4.0 | |
| Kyrgyzstan | 3.4 | 2.8 | 2.5 | 2.3 | 2.3 | 2.3 | 2.3 | 2.2 | 2.2 | 2.1 | |||||
| Russian Federation | 4.5 | 4.6 | 4.8 | 5.0 | 4.2 | 4.0 | 4.0 | 4.1 | 3.9 | 4.0 | 4.1 | 4.1 | 4.2 | 3.8 |