데이터 표
| 1995 | 38.2% | 2006 | 36.3% | 2017 | 25% |
| 1996 | 38.3% | 2007 | 35.9% | 2018 | 24.8% |
| 1997 | 37.5% | 2008 | 34.5% | 2019 | 24.3% |
| 1998 | 36.2% | 2009 | 33% | 2020 | 21.8% |
| 1999 | 36% | 2010 | 32.8% | 2021 | 22.2% |
| 2000 | 35.4% | 2011 | 33.4% | 2022 | 22.2% |
| 2001 | 33.1% | 2012 | 33.9% | 2023 | 23.6% |
| 2002 | 32.4% | 2013 | 33.6% | 2024 | 26.4% |
| 2003 | 33% | 2014 | 33% | 2025 | 23.2% |
| 2004 | 34.1% | 2015 | 26.1% | 2026 | 23.1% |
| 2005 | 34.6% | 2016 | 26.8% | | |
데이터 표
| 1980 | 49.3억 | 1996 | 231억 | 2012 | 598억 |
| 1981 | 61.3억 | 1997 | 260억 | 2013 | 614억 |
| 1982 | 76.7억 | 1998 | 292억 | 2014 | 663억 |
| 1983 | 88.4억 | 1999 | 334억 | 2015 | 711억 |
| 1984 | 98.3억 | 2000 | 384억 | 2016 | 738억 |
| 1985 | 120억 | 2001 | 405억 | 2017 | 770억 |
| 1986 | 124억 | 2002 | 440억 | 2018 | 832억 |
| 1987 | 127억 | 2003 | 481억 | 2019 | 883억 |
| 1988 | 139억 | 2004 | 533억 | 2020 | 833억 |
| 1989 | 142억 | 2005 | 589억 | 2021 | 997억 |
| 1990 | 155억 | 2006 | 672억 | 2022 | 1,158억 |
| 1991 | 166억 | 2007 | 708억 | 2023 | 1,238억 |
| 1992 | 180억 | 2008 | 647억 | 2024 | 1,486억 |
| 1993 | 185억 | 2009 | 559억 | 2025 | 1,473억 |
| 1994 | 201억 | 2010 | 549억 | 2026 | 1,528억 |
| 1995 | 210억 | 2011 | 578억 | | |
데이터 표
| 1995 | 40.3% | 2006 | 33.6% | 2017 | 25.3% |
| 1996 | 38.5% | 2007 | 35.6% | 2018 | 24.7% |
| 1997 | 36.1% | 2008 | 41.6% | 2019 | 23.9% |
| 1998 | 34.2% | 2009 | 46.9% | 2020 | 26.7% |
| 1999 | 32.5% | 2010 | 64.9% | 2021 | 23.5% |
| 2000 | 30.6% | 2011 | 46.9% | 2022 | 20.7% |
| 2001 | 32.2% | 2012 | 42.3% | 2023 | 22.2% |
| 2002 | 32.9% | 2013 | 39.8% | 2024 | 22.4% |
| 2003 | 32.7% | 2014 | 36.6% | 2025 | 21.6% |
| 2004 | 32.8% | 2015 | 28.1% | 2026 | 22.6% |
| 2005 | 33% | 2016 | 27.5% | | |
데이터 표
| 1980 | 63.3억 | 1996 | 232억 | 2012 | 747억 |
| 1981 | 79.3억 | 1997 | 250억 | 2013 | 729억 |
| 1982 | 99.5억 | 1998 | 275억 | 2014 | 733억 |
| 1983 | 110억 | 1999 | 302억 | 2015 | 764억 |
| 1984 | 119억 | 2000 | 332억 | 2016 | 759억 |
| 1985 | 146억 | 2001 | 393억 | 2017 | 780억 |
| 1986 | 151억 | 2002 | 447억 | 2018 | 829억 |
| 1987 | 150억 | 2003 | 476억 | 2019 | 868억 |
| 1988 | 152억 | 2004 | 513억 | 2020 | 1,019억 |
| 1989 | 149억 | 2005 | 562억 | 2021 | 1,055억 |
| 1990 | 164억 | 2006 | 621억 | 2022 | 1,076억 |
| 1991 | 177억 | 2007 | 702억 | 2023 | 1,166억 |
| 1992 | 191억 | 2008 | 778억 | 2024 | 1,260억 |
| 1993 | 196억 | 2009 | 795억 | 2025 | 1,375억 |
| 1994 | 209억 | 2010 | 1,086억 | 2026 | 1,491억 |
| 1995 | 221억 | 2011 | 811억 | | |