Show data table
| 1986 | 42.2% | 2000 | 39.5% | 2014 | 44.3% |
| 1987 | 37.3% | 2001 | 39.4% | 2015 | 43.8% |
| 1988 | 37.9% | 2002 | 40.5% | 2016 | 42.9% |
| 1989 | 38% | 2003 | 39.7% | 2017 | 42.5% |
| 1990 | 35.3% | 2004 | 40.1% | 2018 | 42.9% |
| 1991 | 38% | 2005 | 40.7% | 2019 | 42.6% |
| 1992 | 43% | 2006 | 41.1% | 2020 | 43.4% |
| 1993 | 38.4% | 2007 | 41.6% | 2021 | 44.5% |
| 1994 | 35.4% | 2008 | 41.7% | 2022 | 43.6% |
| 1995 | 37.5% | 2009 | 40.4% | 2023 | 43.2% |
| 1996 | 38.4% | 2010 | 40.5% | 2024 | 43% |
| 1997 | 38.8% | 2011 | 42.3% | 2025 | 44.1% |
| 1998 | 38.3% | 2012 | 42.6% | 2026 | 43.8% |
| 1999 | 39.6% | 2013 | 44.7% | | |
Show data table
| 1986 | 11.9B | 2000 | 50.7B | 2014 | 76.8B |
| 1987 | 12.4B | 2001 | 53.5B | 2015 | 78.7B |
| 1988 | 15B | 2002 | 57.7B | 2016 | 80B |
| 1989 | 17.8B | 2003 | 58.1B | 2017 | 83.1B |
| 1990 | 19.9B | 2004 | 61B | 2018 | 87.9B |
| 1991 | 24.6B | 2005 | 64.5B | 2019 | 91.4B |
| 1992 | 31.3B | 2006 | 68.3B | 2020 | 87.2B |
| 1993 | 29.2B | 2007 | 73.1B | 2021 | 96.4B |
| 1994 | 29.2B | 2008 | 74.6B | 2022 | 106B |
| 1995 | 33.3B | 2009 | 70.8B | 2023 | 117B |
| 1996 | 36.2B | 2010 | 72.8B | 2024 | 125B |
| 1997 | 39.7B | 2011 | 74.6B | 2025 | 135B |
| 1998 | 42.7B | 2012 | 71.9B | 2026 | 141B |
| 1999 | 47.3B | 2013 | 76.4B | | |
Show data table
| 1986 | 52.5% | 2000 | 42.8% | 2014 | 51.7% |
| 1987 | 45.7% | 2001 | 44.1% | 2015 | 48.2% |
| 1988 | 42.2% | 2002 | 44.2% | 2016 | 44.9% |
| 1989 | 41.5% | 2003 | 45.3% | 2017 | 45.5% |
| 1990 | 42.2% | 2004 | 46% | 2018 | 43.3% |
| 1991 | 45.9% | 2005 | 46.7% | 2019 | 42.5% |
| 1992 | 48.2% | 2006 | 45.2% | 2020 | 49.1% |
| 1993 | 46.5% | 2007 | 44.6% | 2021 | 47.3% |
| 1994 | 42.8% | 2008 | 45.5% | 2022 | 43.9% |
| 1995 | 42.6% | 2009 | 50.3% | 2023 | 41.9% |
| 1996 | 43% | 2010 | 51.9% | 2024 | 42.5% |
| 1997 | 42.4% | 2011 | 50% | 2025 | 43.7% |
| 1998 | 42.6% | 2012 | 48.8% | 2026 | 43.9% |
| 1999 | 42.5% | 2013 | 50% | | |
Show data table
| 1986 | 14.8B | 2000 | 55B | 2014 | 89.5B |
| 1987 | 15.2B | 2001 | 59.9B | 2015 | 86.5B |
| 1988 | 16.8B | 2002 | 63B | 2016 | 83.6B |
| 1989 | 19.5B | 2003 | 66.2B | 2017 | 88.9B |
| 1990 | 23.8B | 2004 | 70B | 2018 | 88.7B |
| 1991 | 29.7B | 2005 | 74.1B | 2019 | 91.1B |
| 1992 | 35B | 2006 | 75.1B | 2020 | 98.8B |
| 1993 | 35.3B | 2007 | 78.2B | 2021 | 102B |
| 1994 | 35.2B | 2008 | 81.5B | 2022 | 107B |
| 1995 | 37.9B | 2009 | 88.2B | 2023 | 113B |
| 1996 | 40.6B | 2010 | 93.3B | 2024 | 123B |
| 1997 | 43.4B | 2011 | 88.2B | 2025 | 134B |
| 1998 | 47.5B | 2012 | 82.3B | 2026 | 142B |
| 1999 | 50.8B | 2013 | 85.3B | | |