Show data table
| 1985 | 18.9% | 1999 | 22.5% | 2013 | 20.3% |
| 1986 | 19.5% | 2000 | 19.8% | 2014 | 20.3% |
| 1987 | 20.5% | 2001 | 19% | 2015 | 20.9% |
| 1988 | 20.2% | 2002 | 20% | 2016 | 21.1% |
| 1989 | 19.9% | 2003 | 19.3% | 2017 | 20.9% |
| 1990 | 16.8% | 2004 | 19.9% | 2018 | 22% |
| 1991 | 17.5% | 2005 | 19.3% | 2019 | 21.6% |
| 1992 | 17.6% | 2006 | 19.4% | 2020 | 21.6% |
| 1993 | 21.3% | 2007 | 20.6% | 2021 | 21.3% |
| 1994 | 18.7% | 2008 | 21.6% | 2022 | 21.3% |
| 1995 | 18.9% | 2009 | 21.6% | 2023 | 22.1% |
| 1996 | 18.3% | 2010 | 21.5% | 2024 | 22.6% |
| 1997 | 17.9% | 2011 | 21.5% | 2025 | 22.4% |
| 1998 | 20.8% | 2012 | 20.2% | 2026 | 22.2% |
Show data table
| 1985 | 152M | 1999 | 561M | 2013 | 923M |
| 1986 | 183M | 2000 | 492M | 2014 | 968M |
| 1987 | 215M | 2001 | 458M | 2015 | 1.03B |
| 1988 | 242M | 2002 | 497M | 2016 | 1.08B |
| 1989 | 274M | 2003 | 525M | 2017 | 1.14B |
| 1990 | 266M | 2004 | 582M | 2018 | 1.23B |
| 1991 | 298M | 2005 | 608M | 2019 | 1.22B |
| 1992 | 322M | 2006 | 672M | 2020 | 934M |
| 1993 | 398M | 2007 | 753M | 2021 | 1.14B |
| 1994 | 367M | 2008 | 829M | 2022 | 1.35B |
| 1995 | 392M | 2009 | 827M | 2023 | 1.46B |
| 1996 | 391M | 2010 | 875M | 2024 | 1.58B |
| 1997 | 399M | 2011 | 915M | 2025 | 1.62B |
| 1998 | 498M | 2012 | 879M | 2026 | 1.68B |
Show data table
| 1985 | 20.4% | 1999 | 20.9% | 2013 | 24.3% |
| 1986 | 21.1% | 2000 | 20.9% | 2014 | 22.6% |
| 1987 | 19.9% | 2001 | 22% | 2015 | 22.1% |
| 1988 | 18.2% | 2002 | 23% | 2016 | 22.6% |
| 1989 | 19% | 2003 | 22.5% | 2017 | 23% |
| 1990 | 16.5% | 2004 | 22.5% | 2018 | 23.2% |
| 1991 | 18% | 2005 | 25.3% | 2019 | 24.6% |
| 1992 | 18.3% | 2006 | 24.4% | 2020 | 33.1% |
| 1993 | 21.6% | 2007 | 22.2% | 2021 | 26.7% |
| 1994 | 18.7% | 2008 | 22.3% | 2022 | 23.8% |
| 1995 | 19% | 2009 | 24.2% | 2023 | 25.3% |
| 1996 | 18.8% | 2010 | 25.6% | 2024 | 24.4% |
| 1997 | 19% | 2011 | 26.9% | 2025 | 25.2% |
| 1998 | 18.6% | 2012 | 27.1% | 2026 | 25.1% |
Show data table
| 1985 | 164M | 1999 | 521M | 2013 | 1.1B |
| 1986 | 199M | 2000 | 521M | 2014 | 1.08B |
| 1987 | 209M | 2001 | 532M | 2015 | 1.09B |
| 1988 | 218M | 2002 | 572M | 2016 | 1.16B |
| 1989 | 262M | 2003 | 611M | 2017 | 1.25B |
| 1990 | 262M | 2004 | 658M | 2018 | 1.3B |
| 1991 | 305M | 2005 | 797M | 2019 | 1.39B |
| 1992 | 334M | 2006 | 846M | 2020 | 1.43B |
| 1993 | 402M | 2007 | 811M | 2021 | 1.43B |
| 1994 | 367M | 2008 | 857M | 2022 | 1.51B |
| 1995 | 395M | 2009 | 928M | 2023 | 1.66B |
| 1996 | 403M | 2010 | 1.04B | 2024 | 1.71B |
| 1997 | 423M | 2011 | 1.14B | 2025 | 1.83B |
| 1998 | 445M | 2012 | 1.18B | 2026 | 1.9B |