데이터 표
| 1989 | 20.7억 | 2002 | 4.56억 | 2015 | 6.33억 |
| 1990 | 7.95억 | 2003 | 5.69억 | 2016 | 6.71억 |
| 1991 | 2.32억 | 2004 | 6.21억 | 2017 | 7.2억 |
| 1992 | 2.56억 | 2005 | 6.68억 | 2018 | 9.61억 |
| 1993 | 2.83억 | 2006 | 7.16억 | 2019 | 21.6억 |
| 1994 | 2.42억 | 2007 | 9.9억 | 2020 | 11.2억 |
| 1995 | 3.11억 | 2008 | 11.6억 | 2021 | 12.8억 |
| 1996 | 2.14억 | 2009 | 9.05억 | 2022 | 14.4억 |
| 1997 | 2.44억 | 2010 | 8.33억 | 2023 | 19.9억 |
| 1998 | 3.2억 | 2011 | 7.58억 | 2024 | 21.9억 |
| 1999 | 3.57억 | 2012 | 7.22억 | 2025 | 25.9억 |
| 2000 | 3.51억 | 2013 | 8.12억 | | |
| 2001 | 4.06억 | 2014 | 7.48억 | | |
데이터 표
| 1989 | 4.4% | 2002 | 2.8% | 2015 | 1.2% |
| 1990 | 3.8% | 2003 | 2.7% | 2016 | 1.2% |
| 1991 | 3% | 2004 | 2.4% | 2017 | 1.2% |
| 1992 | 3% | 2005 | 2.2% | 2018 | 1.5% |
| 1993 | 2.6% | 2006 | 2.1% | 2019 | 3.2% |
| 1994 | 2.5% | 2007 | 2.2% | 2020 | 1.6% |
| 1995 | 1.6% | 2008 | 2.1% | 2021 | 1.5% |
| 1996 | 1.7% | 2009 | 1.7% | 2022 | 1.6% |
| 1997 | 2.2% | 2010 | 1.6% | 2023 | 1.9% |
| 1998 | 2.1% | 2011 | 1.3% | 2024 | 1.9% |
| 1999 | 2.6% | 2012 | 1.3% | 2025 | 2% |
| 2000 | 2.7% | 2013 | 1.5% | | |
| 2001 | 2.9% | 2014 | 1.3% | | |