Show data table
| 1980 | 22% | 1996 | 37.8% | 2012 | 47.9% |
| 1981 | 21% | 1997 | 38.8% | 2013 | 48.9% |
| 1982 | 23.2% | 1998 | 40.2% | 2014 | 47.2% |
| 1983 | 24.1% | 1999 | 42% | 2015 | 48.8% |
| 1984 | 24.8% | 2000 | 43.9% | 2016 | 50.6% |
| 1985 | 24.7% | 2001 | 41.8% | 2017 | 49.6% |
| 1986 | 25.2% | 2002 | 40.9% | 2018 | 49.3% |
| 1987 | 25.9% | 2003 | 39.8% | 2019 | 47.5% |
| 1988 | 24.2% | 2004 | 39.8% | 2020 | 48.9% |
| 1989 | 22.9% | 2005 | 40.3% | 2021 | 49% |
| 1990 | 25.2% | 2006 | 39.8% | 2022 | 50.5% |
| 1991 | 25.6% | 2007 | 41% | 2023 | 48.2% |
| 1992 | 26.3% | 2008 | 41.2% | 2024 | 49.5% |
| 1993 | 27.2% | 2009 | 39.4% | 2025 | 50.9% |
| 1994 | 28.4% | 2010 | 41.7% | 2026 | 50.9% |
| 1995 | 36.8% | 2011 | 44.6% | | |
Show data table
| 1980 | 1.54B | 1996 | 38B | 2012 | 89.1B |
| 1981 | 1.76B | 1997 | 43.2B | 2013 | 87.1B |
| 1982 | 2.45B | 1998 | 48.7B | 2014 | 83.1B |
| 1983 | 3.03B | 1999 | 54B | 2015 | 85.6B |
| 1984 | 3.88B | 2000 | 59.8B | 2016 | 88.2B |
| 1985 | 4.72B | 2001 | 61.7B | 2017 | 88B |
| 1986 | 5.75B | 2002 | 65B | 2018 | 89.1B |
| 1987 | 6.68B | 2003 | 69.3B | 2019 | 88B |
| 1988 | 7.58B | 2004 | 75.1B | 2020 | 82B |
| 1989 | 8.52B | 2005 | 78.4B | 2021 | 90.4B |
| 1990 | 11.3B | 2006 | 85.3B | 2022 | 105B |
| 1991 | 14.2B | 2007 | 93.9B | 2023 | 108B |
| 1992 | 16.8B | 2008 | 98.4B | 2024 | 117B |
| 1993 | 19.6B | 2009 | 92.3B | 2025 | 126B |
| 1994 | 23.3B | 2010 | 93.1B | 2026 | 133B |
| 1995 | 33.8B | 2011 | 90.7B | | |
Show data table
| 1980 | 24.5% | 1996 | 46.1% | 2012 | 54.9% |
| 1981 | 28.1% | 1997 | 45.1% | 2013 | 53% |
| 1982 | 28.7% | 1998 | 46.7% | 2014 | 51.5% |
| 1983 | 30.2% | 1999 | 48% | 2015 | 51.9% |
| 1984 | 32% | 2000 | 48.2% | 2016 | 50.3% |
| 1985 | 34.2% | 2001 | 47.5% | 2017 | 48.5% |
| 1986 | 33.8% | 2002 | 47.1% | 2018 | 48.6% |
| 1987 | 34% | 2003 | 47.9% | 2019 | 47.6% |
| 1988 | 33.8% | 2004 | 48.8% | 2020 | 59.3% |
| 1989 | 34.8% | 2005 | 46.6% | 2021 | 56.7% |
| 1990 | 38.5% | 2006 | 45.9% | 2022 | 53.1% |
| 1991 | 35.2% | 2007 | 47.8% | 2023 | 49.6% |
| 1992 | 36.9% | 2008 | 51.5% | 2024 | 48.2% |
| 1993 | 38.6% | 2009 | 54.8% | 2025 | 49.7% |
| 1994 | 36.9% | 2010 | 53.1% | 2026 | 50.3% |
| 1995 | 46.6% | 2011 | 55.1% | | |
Show data table
| 1980 | 1.72B | 1996 | 46.5B | 2012 | 102B |
| 1981 | 2.36B | 1997 | 50.1B | 2013 | 94.4B |
| 1982 | 3.03B | 1998 | 56.6B | 2014 | 90.7B |
| 1983 | 3.81B | 1999 | 61.7B | 2015 | 90.9B |
| 1984 | 5.01B | 2000 | 65.6B | 2016 | 87.7B |
| 1985 | 6.54B | 2001 | 70B | 2017 | 86.1B |
| 1986 | 7.71B | 2002 | 74.9B | 2018 | 87.7B |
| 1987 | 8.76B | 2003 | 83.4B | 2019 | 88.1B |
| 1988 | 10.6B | 2004 | 92.2B | 2020 | 99.3B |
| 1989 | 12.9B | 2005 | 90.8B | 2021 | 105B |
| 1990 | 17.3B | 2006 | 98.3B | 2022 | 110B |
| 1991 | 19.5B | 2007 | 110B | 2023 | 111B |
| 1992 | 23.7B | 2008 | 123B | 2024 | 114B |
| 1993 | 27.9B | 2009 | 128B | 2025 | 123B |
| 1994 | 30.2B | 2010 | 119B | 2026 | 131B |
| 1995 | 42.8B | 2011 | 112B | | |