데이터 표
| 1997 | 9.14억 | 2007 | 9.72억 | 2017 | 8.06억 |
| 1998 | 6.42억 | 2008 | 11.1억 | 2018 | 10.6억 |
| 1999 | 7.37억 | 2009 | 9.74억 | 2019 | 11.8억 |
| 2000 | 3.37억 | 2010 | 8.72억 | 2020 | 12.8억 |
| 2001 | 4.94억 | 2011 | 9.87억 | 2021 | 18.1억 |
| 2002 | 6.79억 | 2012 | 8.65억 | 2022 | 14.5억 |
| 2003 | 7.31억 | 2013 | 9.32억 | 2023 | 18억 |
| 2004 | 7.39억 | 2014 | 9.19억 | 2024 | 24억 |
| 2005 | 6.3억 | 2015 | 7억 | 2025 | 27.8억 |
| 2006 | 7.05억 | 2016 | 7.84억 | | |
데이터 표
| 1996 | 3.2% | 2006 | 2.1% | 2016 | 1.9% |
| 1997 | 3.4% | 2007 | 2.2% | 2017 | 1.8% |
| 1998 | 3.1% | 2008 | 2.1% | 2018 | 2% |
| 1999 | 3.5% | 2009 | 2.1% | 2019 | 2.2% |
| 2000 | 4.6% | 2010 | 2% | 2020 | 2.3% |
| 2001 | 3.6% | 2011 | 1.9% | 2021 | 2.7% |
| 2002 | 3.8% | 2012 | 1.9% | 2022 | 2.2% |
| 2003 | 3.1% | 2013 | 1.8% | 2023 | 2.2% |
| 2004 | 2.8% | 2014 | 1.9% | 2024 | 2.7% |
| 2005 | 2.2% | 2015 | 1.7% | 2025 | 2.8% |