데이터 표
| 1991 | 45.3% | 2003 | 17.2% | 2015 | 4.6% |
| 1992 | 27.9% | 2004 | 13.9% | 2016 | 9.9% |
| 1993 | 28.8% | 2005 | 10.2% | 2017 | 19.6% |
| 1994 | 37.7% | 2006 | 7.8% | 2018 | 14.3% |
| 1995 | 34.9% | 2007 | 7% | 2019 | 10.5% |
| 1996 | 26.5% | 2008 | 5.4% | 2020 | 10.2% |
| 1997 | 24.3% | 2009 | 6.7% | 2021 | 7.2% |
| 1998 | 25.6% | 2010 | 6.2% | 2022 | 3% |
| 1999 | 25.5% | 2011 | 4.6% | 2023 | 3.1% |
| 2000 | 21.4% | 2012 | 3.6% | 2024 | 2.9% |
| 2001 | 23% | 2013 | 3.1% | 2025 | 14.6% |
| 2002 | 21.3% | 2014 | 3.4% | 2026 | 22.3% |
데이터 표
| 1991 | 14.2억 | 2003 | 24.6억 | 2015 | 15.9억 |
| 1992 | 16.3억 | 2004 | 24.3억 | 2016 | 32.7억 |
| 1993 | 20.8억 | 2005 | 24.1억 | 2017 | 71.8억 |
| 1994 | 27.8억 | 2006 | 23억 | 2018 | 59.7억 |
| 1995 | 28.3억 | 2007 | 23억 | 2019 | 45억 |
| 1996 | 24.9억 | 2008 | 21.3억 | 2020 | 34.8억 |
| 1997 | 22.3억 | 2009 | 20.3억 | 2021 | 32.2억 |
| 1998 | 20.3억 | 2010 | 20.4억 | 2022 | 16.6억 |
| 1999 | 23.4억 | 2011 | 19.7억 | 2023 | 15.9억 |
| 2000 | 24.7억 | 2012 | 17.6억 | 2024 | 14.4억 |
| 2001 | 24.6억 | 2013 | 15.3억 | 2025 | 70.6억 |
| 2002 | 24.7억 | 2014 | 15.9억 | 2026 | 118억 |