Show data table
| 1980 | 36.2% | 1996 | 31.9% | 2012 | 35.4% |
| 1981 | 37.6% | 1997 | 32.7% | 2013 | 36.3% |
| 1982 | 38.5% | 1998 | 34.1% | 2014 | 35.4% |
| 1983 | 37.2% | 1999 | 34.5% | 2015 | 35.6% |
| 1984 | 37.1% | 2000 | 35.2% | 2016 | 36% |
| 1985 | 36.9% | 2001 | 34.8% | 2017 | 36.4% |
| 1986 | 35.9% | 2002 | 33.9% | 2018 | 36.2% |
| 1987 | 34.7% | 2003 | 33.8% | 2019 | 35.9% |
| 1988 | 34.4% | 2004 | 34.7% | 2020 | 36.4% |
| 1989 | 34.1% | 2005 | 35.1% | 2021 | 37.4% |
| 1990 | 33.4% | 2006 | 35.4% | 2022 | 38.6% |
| 1991 | 33% | 2007 | 35.8% | 2023 | 38.1% |
| 1992 | 32.3% | 2008 | 35.6% | 2024 | 37.6% |
| 1993 | 31% | 2009 | 34.2% | 2025 | 38.3% |
| 1994 | 31.6% | 2010 | 35.2% | 2026 | 40% |
| 1995 | 32.5% | 2011 | 35.9% | | |
Show data table
| 1980 | 94.1B | 1996 | 292B | 2012 | 609B |
| 1981 | 109B | 1997 | 313B | 2013 | 649B |
| 1982 | 123B | 1998 | 341B | 2014 | 663B |
| 1983 | 131B | 1999 | 361B | 2015 | 685B |
| 1984 | 140B | 2000 | 388B | 2016 | 722B |
| 1985 | 153B | 2001 | 401B | 2017 | 762B |
| 1986 | 161B | 2002 | 404B | 2018 | 787B |
| 1987 | 173B | 2003 | 427B | 2019 | 810B |
| 1988 | 192B | 2004 | 461B | 2020 | 773B |
| 1989 | 210B | 2005 | 493B | 2021 | 868B |
| 1990 | 225B | 2006 | 524B | 2022 | 997B |
| 1991 | 234B | 2007 | 555B | 2023 | 1.05T |
| 1992 | 237B | 2008 | 570B | 2024 | 1.09T |
| 1993 | 240B | 2009 | 533B | 2025 | 1.16T |
| 1994 | 257B | 2010 | 569B | 2026 | 1.25T |
| 1995 | 278B | 2011 | 599B | | |
Show data table
| 1980 | 39% | 1996 | 35.6% | 2012 | 43.3% |
| 1981 | 41.3% | 1997 | 34.7% | 2013 | 41.6% |
| 1982 | 40.8% | 1998 | 34.3% | 2014 | 40.8% |
| 1983 | 40.1% | 1999 | 33.7% | 2015 | 40.1% |
| 1984 | 40.2% | 2000 | 33.8% | 2016 | 39.3% |
| 1985 | 39.4% | 2001 | 34.5% | 2017 | 38.8% |
| 1986 | 38.2% | 2002 | 35.8% | 2018 | 38.5% |
| 1987 | 36.4% | 2003 | 37% | 2019 | 38.3% |
| 1988 | 34.2% | 2004 | 37.9% | 2020 | 49.3% |
| 1989 | 33.6% | 2005 | 38.3% | 2021 | 44.9% |
| 1990 | 34.9% | 2006 | 38.2% | 2022 | 43.2% |
| 1991 | 35.7% | 2007 | 38.4% | 2023 | 44.2% |
| 1992 | 37.7% | 2008 | 40.6% | 2024 | 43.7% |
| 1993 | 37.6% | 2009 | 44.2% | 2025 | 43.6% |
| 1994 | 37.4% | 2010 | 44.5% | 2026 | 43.9% |
| 1995 | 37.5% | 2011 | 43.3% | | |
Show data table
| 1980 | 101B | 1996 | 325B | 2012 | 746B |
| 1981 | 120B | 1997 | 332B | 2013 | 744B |
| 1982 | 131B | 1998 | 344B | 2014 | 766B |
| 1983 | 141B | 1999 | 353B | 2015 | 773B |
| 1984 | 152B | 2000 | 373B | 2016 | 788B |
| 1985 | 163B | 2001 | 397B | 2017 | 815B |
| 1986 | 171B | 2002 | 428B | 2018 | 835B |
| 1987 | 181B | 2003 | 467B | 2019 | 863B |
| 1988 | 190B | 2004 | 502B | 2020 | 1.05T |
| 1989 | 207B | 2005 | 537B | 2021 | 1.04T |
| 1990 | 235B | 2006 | 564B | 2022 | 1.12T |
| 1991 | 253B | 2007 | 596B | 2023 | 1.22T |
| 1992 | 276B | 2008 | 651B | 2024 | 1.26T |
| 1993 | 291B | 2009 | 689B | 2025 | 1.33T |
| 1994 | 304B | 2010 | 719B | 2026 | 1.38T |
| 1995 | 320B | 2011 | 723B | | |