Show data table
| 1980 | 20.4% | 1996 | 21.5% | 2012 | 30.5% |
| 1981 | 15.5% | 1997 | 22.7% | 2013 | 29.4% |
| 1982 | 18.2% | 1998 | 23.1% | 2014 | 31.5% |
| 1983 | 16.5% | 1999 | 24.6% | 2015 | 28.6% |
| 1984 | 17.9% | 2000 | 23.5% | 2016 | 25.6% |
| 1985 | 17.9% | 2001 | 23.3% | 2017 | 28% |
| 1986 | 16.5% | 2002 | 22.8% | 2018 | 25% |
| 1987 | 18.8% | 2003 | 23.8% | 2019 | 26.5% |
| 1988 | 20.2% | 2004 | 27% | 2020 | 28% |
| 1989 | 21.7% | 2005 | 27.3% | 2021 | 24.7% |
| 1990 | 23.7% | 2006 | 36.2% | 2022 | 23.6% |
| 1991 | 22.9% | 2007 | 32.8% | 2023 | 30.9% |
| 1992 | 22% | 2008 | 35% | 2024 | 32.5% |
| 1993 | 19.8% | 2009 | 30.9% | 2025 | 29.6% |
| 1994 | 20% | 2010 | 21.7% | 2026 | 31.5% |
| 1995 | 20.7% | 2011 | 21.3% | | |
Show data table
| 1980 | 156M | 1996 | 1.7B | 2012 | 12.2B |
| 1981 | 136M | 1997 | 2.04B | 2013 | 12.9B |
| 1982 | 184M | 1998 | 2.28B | 2014 | 14.9B |
| 1983 | 186M | 1999 | 2.65B | 2015 | 14.6B |
| 1984 | 221M | 2000 | 2.83B | 2016 | 14.3B |
| 1985 | 243M | 2001 | 3.11B | 2017 | 16.8B |
| 1986 | 256M | 2002 | 3.43B | 2018 | 15.7B |
| 1987 | 337M | 2003 | 3.91B | 2019 | 17.8B |
| 1988 | 428M | 2004 | 4.84B | 2020 | 19.3B |
| 1989 | 584M | 2005 | 5.5B | 2021 | 18B |
| 1990 | 756M | 2006 | 8.03B | 2022 | 18.8B |
| 1991 | 816M | 2007 | 7.99B | 2023 | 26.6B |
| 1992 | 911M | 2008 | 9.51B | 2024 | 29.2B |
| 1993 | 982M | 2009 | 9.25B | 2025 | 27.7B |
| 1994 | 1.18B | 2010 | 6.99B | 2026 | 30.8B |
| 1995 | 1.45B | 2011 | 7.49B | | |
Show data table
| 1980 | 15.3% | 1996 | 22.5% | 2012 | 27.1% |
| 1981 | 18.9% | 1997 | 20.7% | 2013 | 28.8% |
| 1982 | 18.1% | 1998 | 22% | 2014 | 32.7% |
| 1983 | 17% | 1999 | 25.8% | 2015 | 34.5% |
| 1984 | 17% | 2000 | 24.7% | 2016 | 34% |
| 1985 | 19% | 2001 | 25.6% | 2017 | 33.6% |
| 1986 | 18.8% | 2002 | 26.5% | 2018 | 31.6% |
| 1987 | 16.8% | 2003 | 25.9% | 2019 | 32.8% |
| 1988 | 16.7% | 2004 | 31% | 2020 | 32.2% |
| 1989 | 15.8% | 2005 | 29% | 2021 | 29.3% |
| 1990 | 18.2% | 2006 | 27.6% | 2022 | 28.9% |
| 1991 | 19.6% | 2007 | 30.4% | 2023 | 31.5% |
| 1992 | 24.7% | 2008 | 33.4% | 2024 | 33.6% |
| 1993 | 23% | 2009 | 33.9% | 2025 | 35.7% |
| 1994 | 23.4% | 2010 | 31.1% | 2026 | 38.3% |
| 1995 | 19.9% | 2011 | 25.1% | | |
Show data table
| 1980 | 117M | 1996 | 1.78B | 2012 | 10.8B |
| 1981 | 166M | 1997 | 1.86B | 2013 | 12.7B |
| 1982 | 183M | 1998 | 2.17B | 2014 | 15.5B |
| 1983 | 191M | 1999 | 2.78B | 2015 | 17.6B |
| 1984 | 210M | 2000 | 2.97B | 2016 | 19B |
| 1985 | 258M | 2001 | 3.41B | 2017 | 20.2B |
| 1986 | 291M | 2002 | 3.98B | 2018 | 19.8B |
| 1987 | 301M | 2003 | 4.25B | 2019 | 22B |
| 1988 | 355M | 2004 | 5.55B | 2020 | 22.2B |
| 1989 | 427M | 2005 | 5.83B | 2021 | 21.3B |
| 1990 | 582M | 2006 | 6.11B | 2022 | 23B |
| 1991 | 699M | 2007 | 7.42B | 2023 | 27.2B |
| 1992 | 1.02B | 2008 | 9.08B | 2024 | 30.2B |
| 1993 | 1.14B | 2009 | 10.2B | 2025 | 33.4B |
| 1994 | 1.38B | 2010 | 9.99B | 2026 | 37.5B |
| 1995 | 1.39B | 2011 | 8.85B | | |