데이터 표
| 1980 | -4.11억 | 1996 | -8.25억 | 2012 | -12.4억 |
| 1981 | -5.92억 | 1997 | -8.41억 | 2013 | -13.8억 |
| 1982 | -5.14억 | 1998 | -6.87억 | 2014 | -9.54억 |
| 1983 | -5.07억 | 1999 | -9.28억 | 2015 | -12.6억 |
| 1984 | -5.97억 | 2000 | -9.36억 | 2016 | -11.3억 |
| 1985 | -7.71억 | 2001 | -8.2억 | 2017 | -9.87억 |
| 1986 | -6.91억 | 2002 | -7.84억 | 2018 | -2.34억 |
| 1987 | -6.9억 | 2003 | -7.06억 | 2019 | 7.54억 |
| 1988 | -7.15억 | 2004 | -6.87억 | 2020 | 4.8억 |
| 1989 | -3.62억 | 2005 | -7.84억 | 2021 | -3.93억 |
| 1990 | -3.05억 | 2006 | -8.85억 | 2022 | -4.52억 |
| 1991 | -2.64억 | 2007 | -12.1억 | 2023 | 14.7억 |
| 1992 | -7.69억 | 2008 | -14.5억 | 2024 | 8.19억 |
| 1993 | -6.04억 | 2009 | -7.02억 | 2025 | 19.1억 |
| 1994 | -9.11억 | 2010 | -7.77억 | 2026 | 15.6억 |
| 1995 | -7.22억 | 2011 | -11.6억 | | |
데이터 표
| 1980 | -22.5% | 1996 | -19.1% | 2012 | -11.7% |
| 1981 | -27.4% | 1997 | -19.2% | 2013 | -12.6% |
| 1982 | -20.6% | 1998 | -14.8% | 2014 | -8% |
| 1983 | -17.5% | 1999 | -19.1% | 2015 | -9.9% |
| 1984 | -15.1% | 2000 | -18.3% | 2016 | -8.5% |
| 1985 | -20% | 2001 | -15.4% | 2017 | -7.2% |
| 1986 | -11.9% | 2002 | -15% | 2018 | -1.8% |
| 1987 | -20.3% | 2003 | -13.3% | 2019 | 5.9% |
| 1988 | -47.7% | 2004 | -11.9% | 2020 | 3.8% |
| 1989 | -17.4% | 2005 | -12.4% | 2021 | -2.8% |
| 1990 | -58.8% | 2006 | -13.1% | 2022 | -2.9% |
| 1991 | -7.2% | 2007 | -16.3% | 2023 | 8.2% |
| 1992 | -19.7% | 2008 | -17.1% | 2024 | 4.2% |
| 1993 | -16.2% | 2009 | -8.5% | 2025 | 8.6% |
| 1994 | -23.6% | 2010 | -8.9% | 2026 | 6.4% |
| 1995 | -17.4% | 2011 | -11.9% | | |