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| 1980 | -61 M | 1996 | -44 M | 2012 | -83 M |
| 1981 | -39 M | 1997 | -33 M | 2013 | -48 M |
| 1982 | -80 M | 1998 | -21 M | 2014 | 6 M |
| 1983 | -72 M | 1999 | -13 M | 2015 | 21 M |
| 1984 | -66 M | 2000 | 11 M | 2016 | 17 M |
| 1985 | -76 M | 2001 | -16 M | 2017 | 4 M |
| 1986 | -50 M | 2002 | -15 M | 2018 | -54 M |
| 1987 | -45 M | 2003 | -14 M | 2019 | -127 M |
| 1988 | -56 M | 2004 | -9 M | 2020 | -39 M |
| 1989 | -80 M | 2005 | -10 M | 2021 | -14 M |
| 1990 | -45 M | 2006 | -39 M | 2022 | -148 M |
| 1991 | -75 M | 2007 | -31 M | 2023 | -172 M |
| 1992 | -97 M | 2008 | -29 M | 2024 | -162 M |
| 1993 | -62 M | 2009 | -48 M | 2025 | -163 M |
| 1994 | -46 M | 2010 | -71 M | 2026 | -189 M |
| 1995 | -35 M | 2011 | -14 M | | |
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| 1980 | -21,1% | 1996 | -6% | 2012 | -7,9% |
| 1981 | -10,4% | 1997 | -4,7% | 2013 | -4,3% |
| 1982 | -18,9% | 1998 | -3,6% | 2014 | 0,5% |
| 1983 | -15,2% | 1999 | -2,2% | 2015 | 1,8% |
| 1984 | -19,8% | 2000 | 2,7% | 2016 | 1,4% |
| 1985 | -15,6% | 2001 | -3,9% | 2017 | 0,3% |
| 1986 | -10,5% | 2002 | -3,3% | 2018 | -3,5% |
| 1987 | -11,2% | 2003 | -2,5% | 2019 | -8,5% |
| 1988 | -14,9% | 2004 | -1,6% | 2020 | -2,6% |
| 1989 | -17,8% | 2005 | -1,6% | 2021 | -0,8% |
| 1990 | -8,3% | 2006 | -6,2% | 2022 | -8,6% |
| 1991 | -9,8% | 2007 | -4,1% | 2023 | -8,6% |
| 1992 | -11,5% | 2008 | -3% | 2024 | -7,4% |
| 1993 | -9,5% | 2009 | -5,4% | 2025 | -6,2% |
| 1994 | -12,7% | 2010 | -7,5% | 2026 | -6,3% |
| 1995 | -4,5% | 2011 | -1,2% | | |