데이터 표
| 1980 | 153억 | 1996 | 71.1억 | 2012 | 791억 |
| 1981 | 138억 | 1997 | 78.7억 | 2013 | 702억 |
| 1982 | 48.7억 | 1998 | 22.2억 | 2014 | 544억 |
| 1983 | 56.5억 | 1999 | 50.6억 | 2015 | 40.1억 |
| 1984 | 70억 | 2000 | 147억 | 2016 | -50.6억 |
| 1985 | 49.6억 | 2001 | 83.2억 | 2017 | 96.1억 |
| 1986 | 56.7억 | 2002 | 42.6억 | 2018 | 199억 |
| 1987 | 44억 | 2003 | 94.2억 | 2019 | 179억 |
| 1988 | 50.9억 | 2004 | 156억 | 2020 | 48.4억 |
| 1989 | 96.2억 | 2005 | 301억 | 2021 | 374억 |
| 1990 | 37.2억 | 2006 | 453억 | 2022 | 631억 |
| 1991 | -262억 | 2007 | 413억 | 2023 | 514억 |
| 1992 | -4.51억 | 2008 | 602억 | 2024 | 467억 |
| 1993 | 25억 | 2009 | 283억 | 2025 | 367억 |
| 1994 | 32.2억 | 2010 | 370억 | 2026 | 450억 |
| 1995 | 50.2억 | 2011 | 661억 | | |
데이터 표
| 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 | 18.5% | 2011 | 42.9% | | |
| 1996 | 22.6% | 2012 | 45.5% | | |