데이터 표
| 1980 | 20.4% | 1996 | 21.5% | 2012 | 30.5% |
| 1981 | 15.5% | 1997 | 22.7% | 2013 | 29.4% |
| 1982 | 18.2% | 1998 | 23.1% | 2014 | 31.5% |
| 1983 | 16.5% | 1999 | 24.6% | 2015 | 28.6% |
| 1984 | 17.9% | 2000 | 23.5% | 2016 | 25.6% |
| 1985 | 17.9% | 2001 | 23.3% | 2017 | 28% |
| 1986 | 16.5% | 2002 | 22.8% | 2018 | 25% |
| 1987 | 18.8% | 2003 | 23.8% | 2019 | 26.5% |
| 1988 | 20.2% | 2004 | 27% | 2020 | 28% |
| 1989 | 21.7% | 2005 | 27.3% | 2021 | 24.7% |
| 1990 | 23.7% | 2006 | 36.2% | 2022 | 23.6% |
| 1991 | 22.9% | 2007 | 32.8% | 2023 | 30.9% |
| 1992 | 22% | 2008 | 35% | 2024 | 32.5% |
| 1993 | 19.8% | 2009 | 30.9% | 2025 | 29.6% |
| 1994 | 20% | 2010 | 21.7% | 2026 | 31.5% |
| 1995 | 20.7% | 2011 | 21.3% | | |
데이터 표
| 1980 | 1.56억 | 1996 | 17억 | 2012 | 122억 |
| 1981 | 1.36억 | 1997 | 20.4억 | 2013 | 129억 |
| 1982 | 1.84억 | 1998 | 22.8억 | 2014 | 149억 |
| 1983 | 1.86억 | 1999 | 26.5억 | 2015 | 146억 |
| 1984 | 2.21억 | 2000 | 28.3억 | 2016 | 143억 |
| 1985 | 2.43억 | 2001 | 31.1억 | 2017 | 168억 |
| 1986 | 2.56억 | 2002 | 34.3억 | 2018 | 157억 |
| 1987 | 3.37억 | 2003 | 39.1억 | 2019 | 178억 |
| 1988 | 4.28억 | 2004 | 48.4억 | 2020 | 193억 |
| 1989 | 5.84억 | 2005 | 55억 | 2021 | 180억 |
| 1990 | 7.56억 | 2006 | 80.3억 | 2022 | 188억 |
| 1991 | 8.16억 | 2007 | 79.9억 | 2023 | 266억 |
| 1992 | 9.11억 | 2008 | 95.1억 | 2024 | 292억 |
| 1993 | 9.82억 | 2009 | 92.5억 | 2025 | 277억 |
| 1994 | 11.8억 | 2010 | 69.9억 | 2026 | 308억 |
| 1995 | 14.5억 | 2011 | 74.9억 | | |
데이터 표
| 1980 | 15.3% | 1996 | 22.5% | 2012 | 27.1% |
| 1981 | 18.9% | 1997 | 20.7% | 2013 | 28.8% |
| 1982 | 18.1% | 1998 | 22% | 2014 | 32.7% |
| 1983 | 17% | 1999 | 25.8% | 2015 | 34.5% |
| 1984 | 17% | 2000 | 24.7% | 2016 | 34% |
| 1985 | 19% | 2001 | 25.6% | 2017 | 33.6% |
| 1986 | 18.8% | 2002 | 26.5% | 2018 | 31.6% |
| 1987 | 16.8% | 2003 | 25.9% | 2019 | 32.8% |
| 1988 | 16.7% | 2004 | 31% | 2020 | 32.2% |
| 1989 | 15.8% | 2005 | 29% | 2021 | 29.3% |
| 1990 | 18.2% | 2006 | 27.6% | 2022 | 28.9% |
| 1991 | 19.6% | 2007 | 30.4% | 2023 | 31.5% |
| 1992 | 24.7% | 2008 | 33.4% | 2024 | 33.6% |
| 1993 | 23% | 2009 | 33.9% | 2025 | 35.7% |
| 1994 | 23.4% | 2010 | 31.1% | 2026 | 38.3% |
| 1995 | 19.9% | 2011 | 25.1% | | |
데이터 표
| 1980 | 1.17억 | 1996 | 17.8억 | 2012 | 108억 |
| 1981 | 1.66억 | 1997 | 18.6억 | 2013 | 127억 |
| 1982 | 1.83억 | 1998 | 21.7억 | 2014 | 155억 |
| 1983 | 1.91억 | 1999 | 27.8억 | 2015 | 176억 |
| 1984 | 2.1억 | 2000 | 29.7억 | 2016 | 190억 |
| 1985 | 2.58억 | 2001 | 34.1억 | 2017 | 202억 |
| 1986 | 2.91억 | 2002 | 39.8억 | 2018 | 198억 |
| 1987 | 3.01억 | 2003 | 42.6억 | 2019 | 220억 |
| 1988 | 3.55억 | 2004 | 55.5억 | 2020 | 222억 |
| 1989 | 4.27억 | 2005 | 58.3억 | 2021 | 213억 |
| 1990 | 5.82억 | 2006 | 61.1억 | 2022 | 230억 |
| 1991 | 6.99억 | 2007 | 74.2억 | 2023 | 272억 |
| 1992 | 10.2억 | 2008 | 90.8억 | 2024 | 302억 |
| 1993 | 11.4억 | 2009 | 102억 | 2025 | 334억 |
| 1994 | 13.8억 | 2010 | 99.9억 | 2026 | 375억 |
| 1995 | 13.9억 | 2011 | 88.5억 | | |