데이터 표
| 1981 | 41.9% | 1997 | 22.7% | 2013 | 31.2% |
| 1982 | 42.6% | 1998 | 23.9% | 2014 | 28.4% |
| 1983 | 42.8% | 1999 | 23.3% | 2015 | 26.1% |
| 1984 | 43.5% | 2000 | 28.7% | 2016 | 24.4% |
| 1985 | 43.9% | 2001 | 30.9% | 2017 | 28.5% |
| 1986 | 39.2% | 2002 | 30.8% | 2018 | 31.3% |
| 1987 | 39.1% | 2003 | 30.3% | 2019 | 31.8% |
| 1988 | 38% | 2004 | 30.2% | 2020 | 27.9% |
| 1989 | 40.9% | 2005 | 27.5% | 2021 | 32.8% |
| 1990 | 42.3% | 2006 | 33.8% | 2022 | 34.4% |
| 1991 | 39.7% | 2007 | 37.9% | 2023 | 34.6% |
| 1992 | 21% | 2008 | 33.1% | 2024 | 38.9% |
| 1993 | 25% | 2009 | 30.3% | 2025 | 36.3% |
| 1994 | 22.4% | 2010 | 32% | 2026 | 33% |
| 1995 | 21.6% | 2011 | 33.9% | | |
| 1996 | 21.7% | 2012 | 29.8% | | |
데이터 표
| 1981 | 37.2억 | 1997 | 2,121억 | 2013 | 5.99조 |
| 1982 | 41.8억 | 1998 | 2,255억 | 2014 | 6.32조 |
| 1983 | 44.8억 | 1999 | 2,517억 | 2015 | 5.98조 |
| 1984 | 46.8억 | 2000 | 3,514억 | 2016 | 5.84조 |
| 1985 | 49.2억 | 2001 | 4,295억 | 2017 | 7.97조 |
| 1986 | 43.6억 | 2002 | 4,770억 | 2018 | 10.19조 |
| 1987 | 45.4억 | 2003 | 5,539억 | 2019 | 12.04조 |
| 1988 | 46.8억 | 2004 | 7,131억 | 2020 | 10.44조 |
| 1989 | 52.4억 | 2005 | 8,379억 | 2021 | 14.31조 |
| 1990 | 53억 | 2006 | 1.36조 | 2022 | 18.52조 |
| 1991 | 89.7억 | 2007 | 1.88조 | 2023 | 24.39조 |
| 1992 | 118억 | 2008 | 2.17조 | 2024 | 31.37조 |
| 1993 | 568억 | 2009 | 1.99조 | 2025 | 32.65조 |
| 1994 | 857억 | 2010 | 3.12조 | 2026 | 34.16조 |
| 1995 | 1,409억 | 2011 | 4.47조 | | |
| 1996 | 1,604억 | 2012 | 4.98조 | | |
데이터 표
| 1981 | 45% | 1997 | 30.8% | 2013 | 32.2% |
| 1982 | 45.4% | 1998 | 36.2% | 2014 | 32.1% |
| 1983 | 45.9% | 1999 | 33.2% | 2015 | 31.2% |
| 1984 | 47% | 2000 | 34.5% | 2016 | 39.7% |
| 1985 | 47.8% | 2001 | 35.2% | 2017 | 32.2% |
| 1986 | 52% | 2002 | 35.5% | 2018 | 28.4% |
| 1987 | 52.8% | 2003 | 33.7% | 2019 | 30.8% |
| 1988 | 52.4% | 2004 | 31.8% | 2020 | 37.1% |
| 1989 | 52.7% | 2005 | 25.1% | 2021 | 35.9% |
| 1990 | 51.7% | 2006 | 26.2% | 2022 | 33.7% |
| 1991 | 46% | 2007 | 35.3% | 2023 | 31.9% |
| 1992 | 29.1% | 2008 | 37.6% | 2024 | 37.5% |
| 1993 | 38.3% | 2009 | 35.5% | 2025 | 34.6% |
| 1994 | 32.2% | 2010 | 31.6% | 2026 | 33.5% |
| 1995 | 26.6% | 2011 | 37.9% | | |
| 1996 | 28.6% | 2012 | 36.1% | | |
데이터 표
| 1981 | 40억 | 1997 | 2,876억 | 2013 | 6.16조 |
| 1982 | 44.5억 | 1998 | 3,421억 | 2014 | 7.14조 |
| 1983 | 48.1억 | 1999 | 3,588억 | 2015 | 7.14조 |
| 1984 | 50.5억 | 2000 | 4,227억 | 2016 | 9.5조 |
| 1985 | 53.6억 | 2001 | 4,897억 | 2017 | 9.01조 |
| 1986 | 57.9억 | 2002 | 5,505억 | 2018 | 9.26조 |
| 1987 | 61.3억 | 2003 | 6,158억 | 2019 | 11.66조 |
| 1988 | 64.5억 | 2004 | 7,513억 | 2020 | 13.9조 |
| 1989 | 67.5억 | 2005 | 7,638억 | 2021 | 15.63조 |
| 1990 | 64.7억 | 2006 | 1.05조 | 2022 | 18.16조 |
| 1991 | 104억 | 2007 | 1.75조 | 2023 | 22.46조 |
| 1992 | 163억 | 2008 | 2.47조 | 2024 | 30.25조 |
| 1993 | 872억 | 2009 | 2.34조 | 2025 | 31.12조 |
| 1994 | 1,229억 | 2010 | 3.08조 | 2026 | 34.72조 |
| 1995 | 1,733억 | 2011 | 5조 | | |
| 1996 | 2,112억 | 2012 | 6.02조 | | |