Show data table
| 1980 | 25.7% | 1996 | 28.4% | 2012 | 30.1% |
| 1981 | 27% | 1997 | 29% | 2013 | 30.8% |
| 1982 | 27.3% | 1998 | 28.2% | 2014 | 32.2% |
| 1983 | 27.3% | 1999 | 28.5% | 2015 | 32.9% |
| 1984 | 27.9% | 2000 | 28.3% | 2016 | 32.9% |
| 1985 | 28.4% | 2001 | 28.6% | 2017 | 32.8% |
| 1986 | 28.4% | 2002 | 27.6% | 2018 | 33.5% |
| 1987 | 29.6% | 2003 | 27.3% | 2019 | 33.4% |
| 1988 | 29.7% | 2004 | 28.1% | 2020 | 34.5% |
| 1989 | 29.7% | 2005 | 28.8% | 2021 | 35% |
| 1990 | 30.7% | 2006 | 29.7% | 2022 | 36% |
| 1991 | 30.3% | 2007 | 29.9% | 2023 | 35.4% |
| 1992 | 30.2% | 2008 | 29.7% | 2024 | 35.6% |
| 1993 | 29.1% | 2009 | 28.7% | 2025 | 35.8% |
| 1994 | 28.4% | 2010 | 28.4% | 2026 | 35.6% |
| 1995 | 28.6% | 2011 | 29.4% | | |
Show data table
| 1980 | 67.41T | 1996 | 154.98T | 2012 | 152.29T |
| 1981 | 75.95T | 1997 | 160.66T | 2013 | 158.44T |
| 1982 | 80.58T | 1998 | 153.4T | 2014 | 170.02T |
| 1983 | 84.19T | 1999 | 152.16T | 2015 | 180.81T |
| 1984 | 91.35T | 2000 | 153.51T | 2016 | 182.95T |
| 1985 | 98.83T | 2001 | 154.16T | 2017 | 185.63T |
| 1986 | 103.74T | 2002 | 147.2T | 2018 | 190.73T |
| 1987 | 113.03T | 2003 | 144.65T | 2019 | 190.87T |
| 1988 | 121.73T | 2004 | 150.16T | 2020 | 191.3T |
| 1989 | 130.5T | 2005 | 154.9T | 2021 | 200.9T |
| 1990 | 144.93T | 2006 | 160.73T | 2022 | 210.45T |
| 1991 | 152.21T | 2007 | 163.07T | 2023 | 217.96T |
| 1992 | 155.62T | 2008 | 158.31T | 2024 | 226.06T |
| 1993 | 150.07T | 2009 | 143.38T | 2025 | 237.65T |
| 1994 | 148.21T | 2010 | 144.85T | 2026 | 241.02T |
| 1995 | 151.84T | 2011 | 147.42T | | |
Show data table
| 1980 | 30.1% | 1996 | 33.1% | 2012 | 38.4% |
| 1981 | 30.8% | 1997 | 32.4% | 2013 | 38.4% |
| 1982 | 31% | 1998 | 38.1% | 2014 | 37.8% |
| 1983 | 31.1% | 1999 | 35.2% | 2015 | 36.6% |
| 1984 | 30.5% | 2000 | 35.4% | 2016 | 36.5% |
| 1985 | 29.7% | 2001 | 34.7% | 2017 | 35.9% |
| 1986 | 29.7% | 2002 | 34.9% | 2018 | 36% |
| 1987 | 30% | 2003 | 34.6% | 2019 | 36.4% |
| 1988 | 29.2% | 2004 | 33.3% | 2020 | 43.6% |
| 1989 | 28.5% | 2005 | 33.2% | 2021 | 41.4% |
| 1990 | 28.8% | 2006 | 32.7% | 2022 | 40.2% |
| 1991 | 28.6% | 2007 | 32.8% | 2023 | 37.8% |
| 1992 | 29.6% | 2008 | 33.7% | 2024 | 37.3% |
| 1993 | 31.4% | 2009 | 38.3% | 2025 | 36.9% |
| 1994 | 32.1% | 2010 | 37.4% | 2026 | 37.6% |
| 1995 | 32.8% | 2011 | 38.4% | | |
Show data table
| 1980 | 78.72T | 1996 | 180.95T | 2012 | 193.85T |
| 1981 | 86.53T | 1997 | 179.72T | 2013 | 197.65T |
| 1982 | 91.58T | 1998 | 207.25T | 2014 | 199.49T |
| 1983 | 96.11T | 1999 | 187.82T | 2015 | 200.79T |
| 1984 | 99.74T | 2000 | 192.49T | 2016 | 202.83T |
| 1985 | 103.5T | 2001 | 187.11T | 2017 | 202.86T |
| 1986 | 108.6T | 2002 | 185.63T | 2018 | 204.63T |
| 1987 | 114.37T | 2003 | 183.6T | 2019 | 208.28T |
| 1988 | 119.75T | 2004 | 178.3T | 2020 | 241.37T |
| 1989 | 125.22T | 2005 | 178.51T | 2021 | 237.17T |
| 1990 | 135.89T | 2006 | 176.92T | 2022 | 235.18T |
| 1991 | 143.98T | 2007 | 178.63T | 2023 | 232.71T |
| 1992 | 152.73T | 2008 | 180T | 2024 | 236.64T |
| 1993 | 162.13T | 2009 | 191.44T | 2025 | 244.65T |
| 1994 | 167.5T | 2010 | 191.02T | 2026 | 254.88T |
| 1995 | 174.25T | 2011 | 192.62T | | |