데이터 표
| 1990 | 41.3% | 2003 | 39.9% | 2016 | 25% |
| 1991 | 37.6% | 2004 | 39.5% | 2017 | 29% |
| 1992 | 35.3% | 2005 | 41.8% | 2018 | 31.6% |
| 1993 | 33.2% | 2006 | 42.3% | 2019 | 33.9% |
| 1994 | 32.3% | 2007 | 41.2% | 2020 | 28.9% |
| 1995 | 34.3% | 2008 | 40.2% | 2021 | 33.3% |
| 1996 | 35.7% | 2009 | 33.1% | 2022 | 41.4% |
| 1997 | 36.9% | 2010 | 35.5% | 2023 | 34.2% |
| 1998 | 31.8% | 2011 | 42.7% | 2024 | 31.9% |
| 1999 | 34.5% | 2012 | 42.7% | 2025 | 29.9% |
| 2000 | 43.4% | 2013 | 42.1% | 2026 | 31.8% |
| 2001 | 40.8% | 2014 | 39.8% | | |
| 2002 | 39.5% | 2015 | 31.1% | | |
데이터 표
| 1990 | 21.3억 | 2003 | 37.9억 | 2016 | 72.2억 |
| 1991 | 18.8억 | 2004 | 43.1억 | 2017 | 90.1억 |
| 1992 | 19.4억 | 2005 | 57.1억 | 2018 | 111억 |
| 1993 | 18.3억 | 2006 | 69.2억 | 2019 | 115억 |
| 1994 | 18.4억 | 2007 | 76.5억 | 2020 | 84.3억 |
| 1995 | 20.9억 | 2008 | 108억 | 2021 | 112억 |
| 1996 | 24억 | 2009 | 70.6억 | 2022 | 175억 |
| 1997 | 25.7억 | 2010 | 88.8억 | 2023 | 140억 |
| 1998 | 19.6억 | 2011 | 127억 | 2024 | 132억 |
| 1999 | 23.6억 | 2012 | 144억 | 2025 | 122억 |
| 2000 | 37.1억 | 2013 | 145억 | 2026 | 143억 |
| 2001 | 34.9억 | 2014 | 142억 | | |
| 2002 | 35억 | 2015 | 94억 | | |
데이터 표
| 1990 | 36.5% | 2003 | 34% | 2016 | 44.6% |
| 1991 | 37.4% | 2004 | 34.1% | 2017 | 39.4% |
| 1992 | 40.1% | 2005 | 30.6% | 2018 | 38.3% |
| 1993 | 40.1% | 2006 | 30.1% | 2019 | 38.8% |
| 1994 | 39.7% | 2007 | 30.7% | 2020 | 44.5% |
| 1995 | 38.2% | 2008 | 25.6% | 2021 | 36.5% |
| 1996 | 33.5% | 2009 | 33.4% | 2022 | 31.1% |
| 1997 | 32.1% | 2010 | 30.6% | 2023 | 27.5% |
| 1998 | 36.1% | 2011 | 34.5% | 2024 | 28.7% |
| 1999 | 34.2% | 2012 | 38.6% | 2025 | 28.9% |
| 2000 | 31.2% | 2013 | 39.3% | 2026 | 26.6% |
| 2001 | 33.3% | 2014 | 41.4% | | |
| 2002 | 34.1% | 2015 | 44.5% | | |
데이터 표
| 1990 | 18.8억 | 2003 | 32.3억 | 2016 | 129억 |
| 1991 | 18.7억 | 2004 | 37.2억 | 2017 | 123억 |
| 1992 | 22억 | 2005 | 41.8억 | 2018 | 135억 |
| 1993 | 22.1억 | 2006 | 49.2억 | 2019 | 131억 |
| 1994 | 22.6억 | 2007 | 57.1억 | 2020 | 130억 |
| 1995 | 23.3억 | 2008 | 68.7억 | 2021 | 123억 |
| 1996 | 22.6억 | 2009 | 71.2억 | 2022 | 131억 |
| 1997 | 22.4억 | 2010 | 76.4억 | 2023 | 112억 |
| 1998 | 22.3억 | 2011 | 103억 | 2024 | 118억 |
| 1999 | 23.4억 | 2012 | 130억 | 2025 | 118억 |
| 2000 | 26.7억 | 2013 | 136억 | 2026 | 120억 |
| 2001 | 28.4억 | 2014 | 148억 | | |
| 2002 | 30.3억 | 2015 | 135억 | | |