Show data table
| 1980 | 49.2% | 1996 | 53.4% | 2012 | 54.8% |
| 1981 | 48% | 1997 | 53.3% | 2013 | 52.6% |
| 1982 | 47.7% | 1998 | 51.3% | 2014 | 52.3% |
| 1983 | 49.4% | 1999 | 52.5% | 2015 | 52.5% |
| 1984 | 48.3% | 2000 | 56.6% | 2016 | 52.7% |
| 1985 | 50.5% | 2001 | 56.6% | 2017 | 52.4% |
| 1986 | 50% | 2002 | 55.3% | 2018 | 53.7% |
| 1987 | 50.9% | 2003 | 54.9% | 2019 | 54.7% |
| 1988 | 51% | 2004 | 55.5% | 2020 | 52.1% |
| 1989 | 49.8% | 2005 | 56.2% | 2021 | 54.6% |
| 1990 | 51.1% | 2006 | 57.9% | 2022 | 60.9% |
| 1991 | 50.2% | 2007 | 57.3% | 2023 | 60.1% |
| 1992 | 49.6% | 2008 | 57.4% | 2024 | 59.7% |
| 1993 | 48.9% | 2009 | 54.7% | 2025 | 58.9% |
| 1994 | 49.7% | 2010 | 54.2% | 2026 | 59.5% |
| 1995 | 52.6% | 2011 | 55.3% | | |
Show data table
| 1980 | 156B | 1996 | 559B | 2012 | 1.67T |
| 1981 | 175B | 1997 | 603B | 2013 | 1.67T |
| 1982 | 192B | 1998 | 592B | 2014 | 1.7T |
| 1983 | 221B | 1999 | 660B | 2015 | 1.7T |
| 1984 | 244B | 2000 | 851B | 2016 | 1.7T |
| 1985 | 283B | 2001 | 883B | 2017 | 1.8T |
| 1986 | 290B | 2002 | 863B | 2018 | 1.99T |
| 1987 | 322B | 2003 | 891B | 2019 | 2.04T |
| 1988 | 337B | 2004 | 994B | 2020 | 1.87T |
| 1989 | 352B | 2005 | 1.13T | 2021 | 2.45T |
| 1990 | 382B | 2006 | 1.3T | 2022 | 3.62T |
| 1991 | 394B | 2007 | 1.37T | 2023 | 3.19T |
| 1992 | 400B | 2008 | 1.53T | 2024 | 3.21T |
| 1993 | 416B | 2009 | 1.36T | 2025 | 3.25T |
| 1994 | 443B | 2010 | 1.44T | 2026 | 3.45T |
| 1995 | 504B | 2011 | 1.59T | | |
Show data table
| 1980 | 44.1% | 1996 | 47.4% | 2012 | 41.4% |
| 1981 | 43.4% | 1997 | 45.9% | 2013 | 42.3% |
| 1982 | 44% | 1998 | 48.2% | 2014 | 44% |
| 1983 | 43.6% | 1999 | 46.7% | 2015 | 46.7% |
| 1984 | 41.6% | 2000 | 41.5% | 2016 | 48.8% |
| 1985 | 41% | 2001 | 43.4% | 2017 | 47.6% |
| 1986 | 44.4% | 2002 | 46.3% | 2018 | 46.1% |
| 1987 | 46.7% | 2003 | 47.7% | 2019 | 48.4% |
| 1988 | 48.6% | 2004 | 44.7% | 2020 | 54.5% |
| 1989 | 48.2% | 2005 | 41.6% | 2021 | 44.7% |
| 1990 | 49.1% | 2006 | 40.1% | 2022 | 36.2% |
| 1991 | 50.3% | 2007 | 40.5% | 2023 | 44.2% |
| 1992 | 51.6% | 2008 | 39.2% | 2024 | 46.9% |
| 1993 | 50.5% | 2009 | 44.7% | 2025 | 49.6% |
| 1994 | 49.7% | 2010 | 43.6% | 2026 | 49.3% |
| 1995 | 49.6% | 2011 | 42.3% | | |
Show data table
| 1980 | 140B | 1996 | 496B | 2012 | 1.26T |
| 1981 | 158B | 1997 | 519B | 2013 | 1.34T |
| 1982 | 177B | 1998 | 556B | 2014 | 1.43T |
| 1983 | 195B | 1999 | 588B | 2015 | 1.51T |
| 1984 | 210B | 2000 | 624B | 2016 | 1.57T |
| 1985 | 230B | 2001 | 677B | 2017 | 1.64T |
| 1986 | 258B | 2002 | 722B | 2018 | 1.71T |
| 1987 | 295B | 2003 | 774B | 2019 | 1.81T |
| 1988 | 321B | 2004 | 800B | 2020 | 1.96T |
| 1989 | 341B | 2005 | 834B | 2021 | 2T |
| 1990 | 367B | 2006 | 901B | 2022 | 2.15T |
| 1991 | 395B | 2007 | 967B | 2023 | 2.35T |
| 1992 | 417B | 2008 | 1.04T | 2024 | 2.52T |
| 1993 | 430B | 2009 | 1.11T | 2025 | 2.73T |
| 1994 | 443B | 2010 | 1.16T | 2026 | 2.86T |
| 1995 | 475B | 2011 | 1.22T | | |