데이터 표
| 1985 | 18.9% | 1999 | 22.5% | 2013 | 20.3% |
| 1986 | 19.5% | 2000 | 19.8% | 2014 | 20.3% |
| 1987 | 20.5% | 2001 | 19% | 2015 | 20.9% |
| 1988 | 20.2% | 2002 | 20% | 2016 | 21.1% |
| 1989 | 19.9% | 2003 | 19.3% | 2017 | 20.9% |
| 1990 | 16.8% | 2004 | 19.9% | 2018 | 22% |
| 1991 | 17.5% | 2005 | 19.3% | 2019 | 21.6% |
| 1992 | 17.6% | 2006 | 19.4% | 2020 | 21.6% |
| 1993 | 21.3% | 2007 | 20.6% | 2021 | 21.3% |
| 1994 | 18.7% | 2008 | 21.6% | 2022 | 21.3% |
| 1995 | 18.9% | 2009 | 21.6% | 2023 | 22.1% |
| 1996 | 18.3% | 2010 | 21.5% | 2024 | 22.6% |
| 1997 | 17.9% | 2011 | 21.5% | 2025 | 22.4% |
| 1998 | 20.8% | 2012 | 20.2% | 2026 | 22.2% |
데이터 표
| 1985 | 1.52억 | 1999 | 5.61억 | 2013 | 9.23억 |
| 1986 | 1.83억 | 2000 | 4.92억 | 2014 | 9.68억 |
| 1987 | 2.15억 | 2001 | 4.58억 | 2015 | 10.3억 |
| 1988 | 2.42억 | 2002 | 4.97억 | 2016 | 10.8억 |
| 1989 | 2.74억 | 2003 | 5.25억 | 2017 | 11.4억 |
| 1990 | 2.66억 | 2004 | 5.82억 | 2018 | 12.3억 |
| 1991 | 2.98억 | 2005 | 6.08억 | 2019 | 12.2억 |
| 1992 | 3.22억 | 2006 | 6.72억 | 2020 | 9.34억 |
| 1993 | 3.98억 | 2007 | 7.53억 | 2021 | 11.4억 |
| 1994 | 3.67억 | 2008 | 8.29억 | 2022 | 13.5억 |
| 1995 | 3.92억 | 2009 | 8.27억 | 2023 | 14.6억 |
| 1996 | 3.91억 | 2010 | 8.75억 | 2024 | 15.8억 |
| 1997 | 3.99억 | 2011 | 9.15억 | 2025 | 16.2억 |
| 1998 | 4.98억 | 2012 | 8.79억 | 2026 | 16.8억 |
데이터 표
| 1985 | 20.4% | 1999 | 20.9% | 2013 | 24.3% |
| 1986 | 21.1% | 2000 | 20.9% | 2014 | 22.6% |
| 1987 | 19.9% | 2001 | 22% | 2015 | 22.1% |
| 1988 | 18.2% | 2002 | 23% | 2016 | 22.6% |
| 1989 | 19% | 2003 | 22.5% | 2017 | 23% |
| 1990 | 16.5% | 2004 | 22.5% | 2018 | 23.2% |
| 1991 | 18% | 2005 | 25.3% | 2019 | 24.6% |
| 1992 | 18.3% | 2006 | 24.4% | 2020 | 33.1% |
| 1993 | 21.6% | 2007 | 22.2% | 2021 | 26.7% |
| 1994 | 18.7% | 2008 | 22.3% | 2022 | 23.8% |
| 1995 | 19% | 2009 | 24.2% | 2023 | 25.3% |
| 1996 | 18.8% | 2010 | 25.6% | 2024 | 24.4% |
| 1997 | 19% | 2011 | 26.9% | 2025 | 25.2% |
| 1998 | 18.6% | 2012 | 27.1% | 2026 | 25.1% |
데이터 표
| 1985 | 1.64억 | 1999 | 5.21억 | 2013 | 11억 |
| 1986 | 1.99억 | 2000 | 5.21억 | 2014 | 10.8억 |
| 1987 | 2.09억 | 2001 | 5.32억 | 2015 | 10.9억 |
| 1988 | 2.18억 | 2002 | 5.72억 | 2016 | 11.6억 |
| 1989 | 2.62억 | 2003 | 6.11억 | 2017 | 12.5억 |
| 1990 | 2.62억 | 2004 | 6.58억 | 2018 | 13억 |
| 1991 | 3.05억 | 2005 | 7.97억 | 2019 | 13.9억 |
| 1992 | 3.34억 | 2006 | 8.46억 | 2020 | 14.3억 |
| 1993 | 4.02억 | 2007 | 8.11억 | 2021 | 14.3억 |
| 1994 | 3.67억 | 2008 | 8.57억 | 2022 | 15.1억 |
| 1995 | 3.95억 | 2009 | 9.28억 | 2023 | 16.6억 |
| 1996 | 4.03억 | 2010 | 10.4억 | 2024 | 17.1억 |
| 1997 | 4.23억 | 2011 | 11.4억 | 2025 | 18.3억 |
| 1998 | 4.45억 | 2012 | 11.8억 | 2026 | 19억 |