데이터 표
| 1980 | 49% | 1996 | 55.8% | 2012 | 54.7% |
| 1981 | 49.2% | 1997 | 55% | 2013 | 54.6% |
| 1982 | 47.9% | 1998 | 55.3% | 2014 | 56.5% |
| 1983 | 50.7% | 1999 | 55.7% | 2015 | 53.5% |
| 1984 | 51.3% | 2000 | 54.7% | 2016 | 52.7% |
| 1985 | 53.1% | 2001 | 54.1% | 2017 | 52.3% |
| 1986 | 53.1% | 2002 | 53.3% | 2018 | 51.6% |
| 1987 | 54.7% | 2003 | 53.6% | 2019 | 54.1% |
| 1988 | 55.1% | 2004 | 55% | 2020 | 53.7% |
| 1989 | 54% | 2005 | 56.3% | 2021 | 53.8% |
| 1990 | 53.3% | 2006 | 55% | 2022 | 48.5% |
| 1991 | 52.3% | 2007 | 54.8% | 2023 | 50.8% |
| 1992 | 53.8% | 2008 | 53.7% | 2024 | 51.8% |
| 1993 | 55.7% | 2009 | 53.6% | 2025 | 50.5% |
| 1994 | 55.6% | 2010 | 54% | 2026 | 49.1% |
| 1995 | 55.2% | 2011 | 54.5% | | |
데이터 표
| 1980 | 1,957억 | 1996 | 6,067억 | 2012 | 1.04조 |
| 1981 | 2,156억 | 1997 | 6,288억 | 2013 | 1.06조 |
| 1982 | 2,397억 | 1998 | 6,556억 | 2014 | 1.12조 |
| 1983 | 2,800억 | 1999 | 6,916억 | 2015 | 1.09조 |
| 1984 | 3,125억 | 2000 | 7,248억 | 2016 | 1.11조 |
| 1985 | 3,515억 | 2001 | 7,427억 | 2017 | 1.14조 |
| 1986 | 3,770억 | 2002 | 7,530억 | 2018 | 1.16조 |
| 1987 | 4,085억 | 2003 | 7,718억 | 2019 | 1.25조 |
| 1988 | 4,289억 | 2004 | 8,307억 | 2020 | 1.25조 |
| 1989 | 4,433억 | 2005 | 8,945억 | 2021 | 1.37조 |
| 1990 | 4,557억 | 2006 | 9,268억 | 2022 | 1.37조 |
| 1991 | 4,659억 | 2007 | 9,546억 | 2023 | 1.42조 |
| 1992 | 4,970억 | 2008 | 9,726억 | 2024 | 1.52조 |
| 1993 | 5,172억 | 2009 | 9,267억 | 2025 | 1.54조 |
| 1994 | 5,521억 | 2010 | 9,789억 | 2026 | 1.56조 |
| 1995 | 5,721억 | 2011 | 1.01조 | | |
데이터 표
| 1980 | 52.7% | 1996 | 58.2% | 2012 | 57.9% |
| 1981 | 56% | 1997 | 56.2% | 2013 | 55.6% |
| 1982 | 57.1% | 1998 | 55.6% | 2014 | 55.1% |
| 1983 | 57.2% | 1999 | 54.7% | 2015 | 54.4% |
| 1984 | 55.7% | 2000 | 52.9% | 2016 | 52.4% |
| 1985 | 54.7% | 2001 | 53% | 2017 | 50.6% |
| 1986 | 51.8% | 2002 | 53.1% | 2018 | 50.8% |
| 1987 | 53.3% | 2003 | 53.5% | 2019 | 49.8% |
| 1988 | 55.2% | 2004 | 52.8% | 2020 | 53.3% |
| 1989 | 55.3% | 2005 | 51.1% | 2021 | 49.7% |
| 1990 | 55.1% | 2006 | 49.7% | 2022 | 45.1% |
| 1991 | 55.5% | 2007 | 49.5% | 2023 | 47.4% |
| 1992 | 56.4% | 2008 | 50.3% | 2024 | 47.3% |
| 1993 | 59.5% | 2009 | 56.3% | 2025 | 47.6% |
| 1994 | 59.5% | 2010 | 56.5% | 2026 | 48.9% |
| 1995 | 58.7% | 2011 | 56.3% | | |
데이터 표
| 1980 | 2,104억 | 1996 | 6,328억 | 2012 | 1.1조 |
| 1981 | 2,453억 | 1997 | 6,428억 | 2013 | 1.08조 |
| 1982 | 2,860억 | 1998 | 6,590억 | 2014 | 1.09조 |
| 1983 | 3,159억 | 1999 | 6,784억 | 2015 | 1.1조 |
| 1984 | 3,394억 | 2000 | 7,010억 | 2016 | 1.1조 |
| 1985 | 3,622억 | 2001 | 7,273억 | 2017 | 1.11조 |
| 1986 | 3,676억 | 2002 | 7,495억 | 2018 | 1.14조 |
| 1987 | 3,978억 | 2003 | 7,698억 | 2019 | 1.15조 |
| 1988 | 4,296억 | 2004 | 7,970억 | 2020 | 1.24조 |
| 1989 | 4,543억 | 2005 | 8,118억 | 2021 | 1.27조 |
| 1990 | 4,710억 | 2006 | 8,377억 | 2022 | 1.28조 |
| 1991 | 4,940억 | 2007 | 8,621억 | 2023 | 1.32조 |
| 1992 | 5,210억 | 2008 | 9,100억 | 2024 | 1.39조 |
| 1993 | 5,518억 | 2009 | 9,742억 | 2025 | 1.46조 |
| 1994 | 5,904억 | 2010 | 1.02조 | 2026 | 1.56조 |
| 1995 | 6,084억 | 2011 | 1.04조 | | |