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| 1980 | -14 M | 1996 | -24 M | 2012 | -55 M |
| 1981 | -20 M | 1997 | -14 M | 2013 | -44 M |
| 1982 | -28 M | 1998 | -12 M | 2014 | -74 M |
| 1983 | -12 M | 1999 | -12 M | 2015 | -35 M |
| 1984 | -17 M | 2000 | -16 M | 2016 | -19 M |
| 1985 | -19 M | 2001 | -16 M | 2017 | -45 M |
| 1986 | -15 M | 2002 | -17 M | 2018 | -50 M |
| 1987 | -12 M | 2003 | -15 M | 2019 | -53 M |
| 1988 | -19 M | 2004 | -23 M | 2020 | -53 M |
| 1989 | -28 M | 2005 | -26 M | 2021 | -69 M |
| 1990 | -30 M | 2006 | -45 M | 2022 | -79 M |
| 1991 | -34 M | 2007 | 123 M | 2023 | -86 M |
| 1992 | -27 M | 2008 | -33 M | 2024 | -18 M |
| 1993 | -30 M | 2009 | -49 M | 2025 | -62 M |
| 1994 | -25 M | 2010 | -45 M | 2026 | -55 M |
| 1995 | -27 M | 2011 | -65 M | | |
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| 1980 | -19,8% | 1996 | -17,6% | 2012 | -23,9% |
| 1981 | -23,6% | 1997 | -14,7% | 2013 | -16,4% |
| 1982 | -34,2% | 1998 | -17,1% | 2014 | -25,2% |
| 1983 | -16% | 1999 | -15,7% | 2015 | -13,5% |
| 1984 | -22% | 2000 | -21% | 2016 | -6,4% |
| 1985 | -23,1% | 2001 | -22,5% | 2017 | -13,8% |
| 1986 | -12,6% | 2002 | -20,9% | 2018 | -12,9% |
| 1987 | -10% | 2003 | -15,9% | 2019 | -12,8% |
| 1988 | -18,7% | 2004 | -22,2% | 2020 | -11,2% |
| 1989 | -28,3% | 2005 | -20,9% | 2021 | -13,1% |
| 1990 | -24,9% | 2006 | -33,9% | 2022 | -14,5% |
| 1991 | -31,6% | 2007 | 84,8% | 2023 | -12,3% |
| 1992 | -28,4% | 2008 | -17,6% | 2024 | -2,2% |
| 1993 | -23,6% | 2009 | -24,2% | 2025 | -6,3% |
| 1994 | -18,8% | 2010 | -23,6% | 2026 | -4,7% |
| 1995 | -26,2% | 2011 | -28,6% | | |