데이터 표
| 1985 | 32.1% | 1999 | 30.7% | 2013 | 25.7% |
| 1986 | 28.5% | 2000 | 29.4% | 2014 | 29.6% |
| 1987 | 26% | 2001 | 29.5% | 2015 | 27.1% |
| 1988 | 28.3% | 2002 | 28.4% | 2016 | 27.3% |
| 1989 | 32.3% | 2003 | 33.4% | 2017 | 28.5% |
| 1990 | 33.1% | 2004 | 35.7% | 2018 | 29.1% |
| 1991 | 31.5% | 2005 | 34.4% | 2019 | 27.6% |
| 1992 | 33.8% | 2006 | 32.1% | 2020 | 25.5% |
| 1993 | 31% | 2007 | 35.1% | 2021 | 27.2% |
| 1994 | 29% | 2008 | 31.5% | 2022 | 27.9% |
| 1995 | 30.6% | 2009 | 28.4% | 2023 | 27.4% |
| 1996 | 29.9% | 2010 | 26.8% | 2024 | 27.3% |
| 1997 | 28% | 2011 | 28.1% | 2025 | 27.4% |
| 1998 | 26.7% | 2012 | 25% | 2026 | 28.2% |
데이터 표
| 1985 | 7.03억 | 1999 | 20.2억 | 2013 | 69.1억 |
| 1986 | 7.09억 | 2000 | 20.1억 | 2014 | 85.1억 |
| 1987 | 6.6억 | 2001 | 21.4억 | 2015 | 81.6억 |
| 1988 | 7.38억 | 2002 | 22.2억 | 2016 | 84.8억 |
| 1989 | 8.7억 | 2003 | 27.6억 | 2017 | 92.1억 |
| 1990 | 10.1억 | 2004 | 32.9억 | 2018 | 98억 |
| 1991 | 10.3억 | 2005 | 35.4억 | 2019 | 95.3억 |
| 1992 | 13.7억 | 2006 | 39.7억 | 2020 | 86.7억 |
| 1993 | 13.5억 | 2007 | 49.4억 | 2021 | 97.9억 |
| 1994 | 14.2억 | 2008 | 57.3억 | 2022 | 106억 |
| 1995 | 16.2억 | 2009 | 55.4억 | 2023 | 109억 |
| 1996 | 16.5억 | 2010 | 57.5억 | 2024 | 114억 |
| 1997 | 16.2억 | 2011 | 65.2억 | 2025 | 120억 |
| 1998 | 17.1억 | 2012 | 61.9억 | 2026 | 130억 |
데이터 표
| 1985 | 39.6% | 1999 | 31.8% | 2013 | 34.5% |
| 1986 | 32.3% | 2000 | 31.2% | 2014 | 36.3% |
| 1987 | 39.3% | 2001 | 30.6% | 2015 | 32.3% |
| 1988 | 41.2% | 2002 | 31.6% | 2016 | 30% |
| 1989 | 39.1% | 2003 | 35% | 2017 | 31.7% |
| 1990 | 39.9% | 2004 | 35.1% | 2018 | 33.3% |
| 1991 | 39.6% | 2005 | 36.6% | 2019 | 32.7% |
| 1992 | 31.7% | 2006 | 34% | 2020 | 33% |
| 1993 | 32.5% | 2007 | 32.4% | 2021 | 33.8% |
| 1994 | 30.6% | 2008 | 29.6% | 2022 | 32.8% |
| 1995 | 32.1% | 2009 | 30.7% | 2023 | 33.9% |
| 1996 | 32.6% | 2010 | 26.6% | 2024 | 34.6% |
| 1997 | 30.7% | 2011 | 29.4% | 2025 | 33.7% |
| 1998 | 32.3% | 2012 | 28.3% | 2026 | 33.7% |
데이터 표
| 1985 | 8.67억 | 1999 | 21억 | 2013 | 92.7억 |
| 1986 | 8.04억 | 2000 | 21.3억 | 2014 | 105억 |
| 1987 | 10억 | 2001 | 22.2억 | 2015 | 97.2억 |
| 1988 | 10.8억 | 2002 | 24.7억 | 2016 | 92.9억 |
| 1989 | 10.5억 | 2003 | 29억 | 2017 | 102억 |
| 1990 | 12.2억 | 2004 | 32.4억 | 2018 | 112억 |
| 1991 | 13억 | 2005 | 37.6억 | 2019 | 113억 |
| 1992 | 12.9억 | 2006 | 42억 | 2020 | 112억 |
| 1993 | 14.1억 | 2007 | 45.5억 | 2021 | 122억 |
| 1994 | 15억 | 2008 | 53.8억 | 2022 | 125억 |
| 1995 | 17억 | 2009 | 59.8억 | 2023 | 135억 |
| 1996 | 18억 | 2010 | 57.1억 | 2024 | 144억 |
| 1997 | 17.8억 | 2011 | 68억 | 2025 | 147억 |
| 1998 | 20.6억 | 2012 | 70.1억 | 2026 | 155억 |