데이터 표
| 1999 | 46% | 2009 | 38.3% | 2019 | 28.3% |
| 2000 | 47.5% | 2010 | 34.6% | 2020 | 25.7% |
| 2001 | 39.2% | 2011 | 37% | 2021 | 29.1% |
| 2002 | 41.1% | 2012 | 38% | 2022 | 29.1% |
| 2003 | 42.6% | 2013 | 39.3% | 2023 | 28.2% |
| 2004 | 41.2% | 2014 | 40.4% | 2024 | 26.5% |
| 2005 | 44.1% | 2015 | 33% | 2025 | 27.6% |
| 2006 | 46.4% | 2016 | 34.8% | 2026 | 25% |
| 2007 | 42.8% | 2017 | 33.5% | | |
| 2008 | 40.5% | 2018 | 30.6% | | |
데이터 표
| 1999 | 120억 | 2009 | 291억 | 2019 | 503억 |
| 2000 | 141억 | 2010 | 312억 | 2020 | 463억 |
| 2001 | 127억 | 2011 | 385억 | 2021 | 636억 |
| 2002 | 143억 | 2012 | 417억 | 2022 | 741억 |
| 2003 | 162억 | 2013 | 490억 | 2023 | 743억 |
| 2004 | 180억 | 2014 | 560억 | 2024 | 695억 |
| 2005 | 230억 | 2015 | 475억 | 2025 | 742억 |
| 2006 | 277억 | 2016 | 575억 | 2026 | 728억 |
| 2007 | 287억 | 2017 | 565억 | | |
| 2008 | 296억 | 2018 | 535억 | | |
데이터 표
| 1980 | 34.3% | 1996 | 36.1% | 2012 | 37.1% |
| 1981 | 37.3% | 1997 | 39% | 2013 | 33.5% |
| 1982 | 36.7% | 1998 | 41.8% | 2014 | 36.5% |
| 1983 | 34.4% | 1999 | 40.1% | 2015 | 37.8% |
| 1984 | 34.6% | 2000 | 38.8% | 2016 | 34.1% |
| 1985 | 31.4% | 2001 | 42.1% | 2017 | 34.7% |
| 1986 | 35.5% | 2002 | 45.1% | 2018 | 35.6% |
| 1987 | 35.9% | 2003 | 42.7% | 2019 | 36.9% |
| 1988 | 32.1% | 2004 | 39.8% | 2020 | 36.5% |
| 1989 | 34% | 2005 | 33.8% | 2021 | 31.4% |
| 1990 | 38.9% | 2006 | 33.1% | 2022 | 29.1% |
| 1991 | 41.1% | 2007 | 37.1% | 2023 | 32.4% |
| 1992 | 42.3% | 2008 | 48.1% | 2024 | 33.7% |
| 1993 | 42% | 2009 | 52.1% | 2025 | 35% |
| 1994 | 37.6% | 2010 | 42.6% | 2026 | 35.7% |
| 1995 | 36.1% | 2011 | 37.2% | | |
데이터 표
| 1980 | 2.93억 | 1996 | 60.5억 | 2012 | 407억 |
| 1981 | 3.39억 | 1997 | 73.2억 | 2013 | 417억 |
| 1982 | 4.08억 | 1998 | 89.4억 | 2014 | 506억 |
| 1983 | 4.64억 | 1999 | 104억 | 2015 | 544억 |
| 1984 | 5.96억 | 2000 | 115억 | 2016 | 563억 |
| 1985 | 7.16억 | 2001 | 137억 | 2017 | 584억 |
| 1986 | 9.67억 | 2002 | 157억 | 2018 | 624억 |
| 1987 | 12.8억 | 2003 | 163억 | 2019 | 654억 |
| 1988 | 17.3억 | 2004 | 174억 | 2020 | 659억 |
| 1989 | 21.8억 | 2005 | 176억 | 2021 | 687억 |
| 1990 | 28.6억 | 2006 | 197억 | 2022 | 740억 |
| 1991 | 33.7억 | 2007 | 248억 | 2023 | 853억 |
| 1992 | 37.9억 | 2008 | 352억 | 2024 | 886억 |
| 1993 | 44.5억 | 2009 | 395억 | 2025 | 942억 |
| 1994 | 44.7억 | 2010 | 384억 | 2026 | 1,039억 |
| 1995 | 50.8억 | 2011 | 387억 | | |