데이터 표
| 1980 | 46.7% | 1996 | 55.1% | 2012 | 53.5% |
| 1981 | 49.3% | 1997 | 53.6% | 2013 | 54.6% |
| 1982 | 48.8% | 1998 | 52.9% | 2014 | 54.6% |
| 1983 | 48.6% | 1999 | 51.5% | 2015 | 53.3% |
| 1984 | 50.2% | 2000 | 53.7% | 2016 | 53.4% |
| 1985 | 52% | 2001 | 51.1% | 2017 | 52.2% |
| 1986 | 53.4% | 2002 | 51.4% | 2018 | 51.8% |
| 1987 | 51.7% | 2003 | 50.6% | 2019 | 51.7% |
| 1988 | 54.4% | 2004 | 50.3% | 2020 | 50.9% |
| 1989 | 53.9% | 2005 | 51.8% | 2021 | 52.5% |
| 1990 | 53.7% | 2006 | 52.2% | 2022 | 52.5% |
| 1991 | 56.1% | 2007 | 51.8% | 2023 | 53.1% |
| 1992 | 55.9% | 2008 | 52.1% | 2024 | 53.4% |
| 1993 | 55.6% | 2009 | 51.6% | 2025 | 53.7% |
| 1994 | 55.8% | 2010 | 51.4% | 2026 | 53.9% |
| 1995 | 54.1% | 2011 | 52.8% | | |
데이터 표
| 1980 | 157억 | 1996 | 562억 | 2012 | 1,073억 |
| 1981 | 188억 | 1997 | 594억 | 2013 | 1,111억 |
| 1982 | 209억 | 1998 | 637억 | 2014 | 1,125억 |
| 1983 | 232억 | 1999 | 654억 | 2015 | 1,121억 |
| 1984 | 268억 | 2000 | 732억 | 2016 | 1,152억 |
| 1985 | 303억 | 2001 | 739억 | 2017 | 1,173억 |
| 1986 | 335억 | 2002 | 763억 | 2018 | 1,201억 |
| 1987 | 350억 | 2003 | 768억 | 2019 | 1,232억 |
| 1988 | 418억 | 2004 | 799억 | 2020 | 1,204억 |
| 1989 | 463억 | 2005 | 853억 | 2021 | 1,305억 |
| 1990 | 489억 | 2006 | 902억 | 2022 | 1,396억 |
| 1991 | 487억 | 2007 | 969억 | 2023 | 1,448억 |
| 1992 | 474억 | 2008 | 1,011억 | 2024 | 1,472억 |
| 1993 | 476억 | 2009 | 938억 | 2025 | 1,506억 |
| 1994 | 506억 | 2010 | 968억 | 2026 | 1,542억 |
| 1995 | 532억 | 2011 | 1,044억 | | |
데이터 표
| 1980 | 43.9% | 1996 | 58.5% | 2012 | 55.7% |
| 1981 | 44.5% | 1997 | 54.9% | 2013 | 57.1% |
| 1982 | 46.4% | 1998 | 51.3% | 2014 | 57.6% |
| 1983 | 48.2% | 1999 | 49.9% | 2015 | 55.7% |
| 1984 | 47.5% | 2000 | 46.9% | 2016 | 55.1% |
| 1985 | 49.4% | 2001 | 46.2% | 2017 | 52.9% |
| 1986 | 50% | 2002 | 47.5% | 2018 | 52.7% |
| 1987 | 51% | 2003 | 48.3% | 2019 | 52.6% |
| 1988 | 49.5% | 2004 | 48.2% | 2020 | 56.5% |
| 1989 | 46.8% | 2005 | 49.2% | 2021 | 55.2% |
| 1990 | 47.1% | 2006 | 48.3% | 2022 | 52.6% |
| 1991 | 55.8% | 2007 | 46.7% | 2023 | 56% |
| 1992 | 60.8% | 2008 | 47.9% | 2024 | 57.8% |
| 1993 | 63.7% | 2009 | 54.1% | 2025 | 57.6% |
| 1994 | 62.2% | 2010 | 54% | 2026 | 58.7% |
| 1995 | 60% | 2011 | 53.8% | | |
데이터 표
| 1980 | 148억 | 1996 | 596억 | 2012 | 1,116억 |
| 1981 | 170억 | 1997 | 608억 | 2013 | 1,162억 |
| 1982 | 199억 | 1998 | 618억 | 2014 | 1,186억 |
| 1983 | 230억 | 1999 | 633억 | 2015 | 1,172억 |
| 1984 | 254억 | 2000 | 640억 | 2016 | 1,189억 |
| 1985 | 288억 | 2001 | 669억 | 2017 | 1,188억 |
| 1986 | 314억 | 2002 | 704억 | 2018 | 1,221억 |
| 1987 | 345억 | 2003 | 733억 | 2019 | 1,255억 |
| 1988 | 380억 | 2004 | 765억 | 2020 | 1,334억 |
| 1989 | 402억 | 2005 | 810억 | 2021 | 1,372억 |
| 1990 | 428억 | 2006 | 834억 | 2022 | 1,401억 |
| 1991 | 485억 | 2007 | 873억 | 2023 | 1,527억 |
| 1992 | 516억 | 2008 | 930억 | 2024 | 1,594억 |
| 1993 | 545억 | 2009 | 983억 | 2025 | 1,615억 |
| 1994 | 564억 | 2010 | 1,016억 | 2026 | 1,679억 |
| 1995 | 591억 | 2011 | 1,064억 | | |