데이터 표
| 1980 | -4.32억 | 1996 | -3.37억 | 2012 | -15.5억 |
| 1981 | -4.52억 | 1997 | -2.7억 | 2013 | -15.6억 |
| 1982 | -3.07억 | 1998 | -3.39억 | 2014 | -13.8억 |
| 1983 | -3.04억 | 1999 | -3.41억 | 2015 | -10.2억 |
| 1984 | -2.72억 | 2000 | -3.28억 | 2016 | -7.97억 |
| 1985 | -2.72억 | 2001 | -2.46억 | 2017 | -15.3억 |
| 1986 | -2.68억 | 2002 | -3.23억 | 2018 | -20.4억 |
| 1987 | -3.06억 | 2003 | -4.37억 | 2019 | -18.5억 |
| 1988 | -4.14억 | 2004 | -5.13억 | 2020 | -29.2억 |
| 1989 | -3.81억 | 2005 | -6.78억 | 2021 | -33.3억 |
| 1990 | -4.44억 | 2006 | -7.24억 | 2022 | -55.5억 |
| 1991 | -4.51억 | 2007 | -13.4억 | 2023 | -60.7억 |
| 1992 | -5.06억 | 2008 | -19.1억 | 2024 | -37억 |
| 1993 | -4.56억 | 2009 | -8.56억 | 2025 | -20.8억 |
| 1994 | -2.89억 | 2010 | -5.68억 | 2026 | -25.2억 |
| 1995 | -3.23억 | 2011 | -11.6억 | | |
데이터 표
| 1980 | -10% | 1996 | -5.3% | 2012 | -8.8% |
| 1981 | -11.5% | 1997 | -4.6% | 2013 | -8.3% |
| 1982 | -8% | 1998 | -5.3% | 2014 | -7% |
| 1983 | -8.9% | 1999 | -5.2% | 2015 | -5.7% |
| 1984 | -8.1% | 2000 | -5.5% | 2016 | -4.2% |
| 1985 | -7.4% | 2001 | -3.8% | 2017 | -7.3% |
| 1986 | -5.2% | 2002 | -4.6% | 2018 | -8.8% |
| 1987 | -4.9% | 2003 | -5% | 2019 | -7.9% |
| 1988 | -6.7% | 2004 | -5.1% | 2020 | -11.9% |
| 1989 | -6.3% | 2005 | -6.2% | 2021 | -12.1% |
| 1990 | -6.3% | 2006 | -6.2% | 2022 | -19.9% |
| 1991 | -6.5% | 2007 | -9.6% | 2023 | -19.8% |
| 1992 | -6.8% | 2008 | -11.3% | 2024 | -11.3% |
| 1993 | -6.5% | 2009 | -5.3% | 2025 | -5.6% |
| 1994 | -6.1% | 2010 | -3.5% | 2026 | -6.2% |
| 1995 | -5.4% | 2011 | -6.5% | | |