表を表示
| 1980 | 153億 | 1996 | 71.1億 | 2012 | 791億 |
| 1981 | 138億 | 1997 | 78.7億 | 2013 | 702億 |
| 1982 | 48.7億 | 1998 | 22.2億 | 2014 | 544億 |
| 1983 | 56.5億 | 1999 | 50.6億 | 2015 | 40.1億 |
| 1984 | 70億 | 2000 | 147億 | 2016 | -50.6億 |
| 1985 | 49.6億 | 2001 | 83.2億 | 2017 | 96.1億 |
| 1986 | 56.7億 | 2002 | 42.6億 | 2018 | 199億 |
| 1987 | 44億 | 2003 | 94.2億 | 2019 | 179億 |
| 1988 | 50.9億 | 2004 | 156億 | 2020 | 48.4億 |
| 1989 | 96.2億 | 2005 | 301億 | 2021 | 374億 |
| 1990 | 37.2億 | 2006 | 453億 | 2022 | 631億 |
| 1991 | -262億 | 2007 | 413億 | 2023 | 514億 |
| 1992 | -4.51億 | 2008 | 602億 | 2024 | 467億 |
| 1993 | 25億 | 2009 | 283億 | 2025 | 367億 |
| 1994 | 32.2億 | 2010 | 370億 | 2026 | 450億 |
| 1995 | 50.2億 | 2011 | 661億 | | |
表を表示
| 1981 | 54.6% | 1997 | 25.9% | 2013 | 40.3% |
| 1982 | 22.6% | 1998 | 8.5% | 2014 | 33.4% |
| 1983 | 27.1% | 1999 | 16.8% | 2015 | 3.5% |
| 1984 | 32.3% | 2000 | 38.9% | 2016 | -4.6% |
| 1985 | 23.1% | 2001 | 23.9% | 2017 | 8% |
| 1986 | 31.7% | 2002 | 11.2% | 2018 | 14.3% |
| 1987 | 19.6% | 2003 | 19.7% | 2019 | 12.7% |
| 1988 | 24.6% | 2004 | 26.2% | 2020 | 4.4% |
| 1989 | 39.6% | 2005 | 37.2% | 2021 | 25.2% |
| 1990 | 20.4% | 2006 | 44.6% | 2022 | 34.4% |
| 1991 | -243% | 2007 | 36% | 2023 | 31.1% |
| 1992 | -2.3% | 2008 | 40.9% | 2024 | 29% |
| 1993 | 10.4% | 2009 | 26.7% | 2025 | 23.3% |
| 1994 | 12.9% | 2010 | 32% | 2026 | 26% |
| 1995 | 18.4% | 2011 | 42.9% | | |
| 1996 | 22.6% | 2012 | 45.5% | | |