데이터 표
| 1980 | 46.5% | 1996 | 45.4% | 2012 | 43.8% |
| 1981 | 47.1% | 1997 | 44.1% | 2013 | 44.7% |
| 1982 | 48% | 1998 | 43.3% | 2014 | 44.6% |
| 1983 | 48.9% | 1999 | 44.6% | 2015 | 43.4% |
| 1984 | 48.3% | 2000 | 44.3% | 2016 | 44.1% |
| 1985 | 48.7% | 2001 | 43.6% | 2017 | 44.1% |
| 1986 | 48.4% | 2002 | 42.6% | 2018 | 43.9% |
| 1987 | 48.4% | 2003 | 42.6% | 2019 | 44% |
| 1988 | 47.4% | 2004 | 42.8% | 2020 | 44.1% |
| 1989 | 44.8% | 2005 | 42.9% | 2021 | 43.6% |
| 1990 | 44.7% | 2006 | 44% | 2022 | 43.3% |
| 1991 | 47.5% | 2007 | 43.1% | 2023 | 43.6% |
| 1992 | 47.1% | 2008 | 44.2% | 2024 | 43.5% |
| 1993 | 47.7% | 2009 | 43.4% | 2025 | 43.3% |
| 1994 | 45.9% | 2010 | 43.6% | 2026 | 43.5% |
| 1995 | 45.2% | 2011 | 43.4% | | |
데이터 표
| 1980 | 812억 | 1996 | 1,569억 | 2012 | 2,884억 |
| 1981 | 864억 | 1997 | 1,630억 | 2013 | 2,973억 |
| 1982 | 916억 | 1998 | 1,709억 | 2014 | 3,024억 |
| 1983 | 969억 | 1999 | 1,872억 | 2015 | 3,036억 |
| 1984 | 1,000억 | 2000 | 2,005억 | 2016 | 3,179억 |
| 1985 | 1,054억 | 2001 | 2,106억 | 2017 | 3,312억 |
| 1986 | 1,081억 | 2002 | 2,140억 | 2018 | 3,459억 |
| 1987 | 1,098억 | 2003 | 2,191억 | 2019 | 3,652억 |
| 1988 | 1,122억 | 2004 | 2,278억 | 2020 | 3,600억 |
| 1989 | 1,124억 | 2005 | 2,373억 | 2021 | 3,890억 |
| 1990 | 1,187억 | 2006 | 2,585억 | 2022 | 4,300억 |
| 1991 | 1,332억 | 2007 | 2,685억 | 2023 | 4,582억 |
| 1992 | 1,375억 | 2008 | 2,879억 | 2024 | 4,879억 |
| 1993 | 1,433억 | 2009 | 2,733억 | 2025 | 5,109억 |
| 1994 | 1,449억 | 2010 | 2,801억 | 2026 | 5,348억 |
| 1995 | 1,492억 | 2011 | 2,844억 | | |
데이터 표
| 1980 | 50.6% | 1996 | 47.3% | 2012 | 47.6% |
| 1981 | 52.3% | 1997 | 45.7% | 2013 | 47.5% |
| 1982 | 53.9% | 1998 | 44.6% | 2014 | 46.7% |
| 1983 | 54.5% | 1999 | 44.3% | 2015 | 45.3% |
| 1984 | 54.5% | 2000 | 43.2% | 2016 | 43.9% |
| 1985 | 52.9% | 2001 | 44.1% | 2017 | 42.8% |
| 1986 | 52.6% | 2002 | 44.8% | 2018 | 42.4% |
| 1987 | 53.6% | 2003 | 45.8% | 2019 | 42.1% |
| 1988 | 51.7% | 2004 | 44.7% | 2020 | 47.8% |
| 1989 | 49.9% | 2005 | 43.4% | 2021 | 45.9% |
| 1990 | 48.8% | 2006 | 44% | 2022 | 43.3% |
| 1991 | 49.6% | 2007 | 43.3% | 2023 | 44% |
| 1992 | 50.2% | 2008 | 44.3% | 2024 | 44.4% |
| 1993 | 50.9% | 2009 | 48.4% | 2025 | 45.1% |
| 1994 | 49.4% | 2010 | 48.9% | 2026 | 46.2% |
| 1995 | 53.9% | 2011 | 47.8% | | |
데이터 표
| 1980 | 885억 | 1996 | 1,635억 | 2012 | 3,136억 |
| 1981 | 959억 | 1997 | 1,690억 | 2013 | 3,164억 |
| 1982 | 1,027억 | 1998 | 1,762억 | 2014 | 3,172억 |
| 1983 | 1,080억 | 1999 | 1,860억 | 2015 | 3,164억 |
| 1984 | 1,130억 | 2000 | 1,954억 | 2016 | 3,163억 |
| 1985 | 1,146억 | 2001 | 2,129억 | 2017 | 3,211억 |
| 1986 | 1,176억 | 2002 | 2,252억 | 2018 | 3,341억 |
| 1987 | 1,217억 | 2003 | 2,356억 | 2019 | 3,493억 |
| 1988 | 1,225억 | 2004 | 2,375억 | 2020 | 3,904억 |
| 1989 | 1,252억 | 2005 | 2,402억 | 2021 | 4,092억 |
| 1990 | 1,295억 | 2006 | 2,583억 | 2022 | 4,300억 |
| 1991 | 1,390억 | 2007 | 2,695억 | 2023 | 4,621억 |
| 1992 | 1,466억 | 2008 | 2,883억 | 2024 | 4,985억 |
| 1993 | 1,527억 | 2009 | 3,052억 | 2025 | 5,326억 |
| 1994 | 1,561억 | 2010 | 3,142억 | 2026 | 5,674억 |
| 1995 | 1,780억 | 2011 | 3,134억 | | |