Show data table
| 1980 | 10.9% | 1996 | 14.9% | 2012 | 15.5% |
| 1981 | 12% | 1997 | 16.2% | 2013 | 15.8% |
| 1982 | 12.8% | 1998 | 17.5% | 2014 | 14.9% |
| 1983 | 13.7% | 1999 | 18.3% | 2015 | 15.4% |
| 1984 | 15.1% | 2000 | 16.7% | 2016 | 15.6% |
| 1985 | 15% | 2001 | 18.7% | 2017 | 14.7% |
| 1986 | 15.9% | 2002 | 19.1% | 2018 | 13.1% |
| 1987 | 14.8% | 2003 | 21.4% | 2019 | 12.8% |
| 1988 | 18.1% | 2004 | 20.5% | 2020 | 11.7% |
| 1989 | 19.7% | 2005 | 18.8% | 2021 | 11% |
| 1990 | 14% | 2006 | 18.3% | 2022 | 8.5% |
| 1991 | 11.3% | 2007 | 17% | 2023 | 8.2% |
| 1992 | 9.3% | 2008 | 15.9% | 2024 | 7.5% |
| 1993 | 9.7% | 2009 | 16.2% | 2025 | 10.9% |
| 1994 | 12.2% | 2010 | 17.2% | 2026 | 11.3% |
| 1995 | 14.6% | 2011 | 16.6% | | |
Show data table
| 1980 | 1.62B | 1996 | 8.06B | 2012 | 116B |
| 1981 | 1.83B | 1997 | 9.03B | 2013 | 137B |
| 1982 | 2.05B | 1998 | 9.37B | 2014 | 158B |
| 1983 | 2.43B | 1999 | 10.5B | 2015 | 200B |
| 1984 | 2.55B | 2000 | 11.2B | 2016 | 245B |
| 1985 | 2.96B | 2001 | 12.8B | 2017 | 270B |
| 1986 | 3.25B | 2002 | 12.8B | 2018 | 288B |
| 1987 | 3.25B | 2003 | 15.9B | 2019 | 345B |
| 1988 | 4.1B | 2004 | 17.9B | 2020 | 395B |
| 1989 | 4.7B | 2005 | 20.1B | 2021 | 479B |
| 1990 | 3.54B | 2006 | 24.3B | 2022 | 526B |
| 1991 | 3.17B | 2007 | 29.4B | 2023 | 717B |
| 1992 | 2.75B | 2008 | 39.7B | 2024 | 887B |
| 1993 | 3.66B | 2009 | 54.6B | 2025 | 1.64T |
| 1994 | 4.93B | 2010 | 66.2B | 2026 | 2.19T |
| 1995 | 7.05B | 2011 | 85.6B | | |
Show data table
| 1980 | 13.5% | 1996 | 18.8% | 2012 | 16.6% |
| 1981 | 14.2% | 1997 | 17.9% | 2013 | 17.8% |
| 1982 | 16.4% | 1998 | 21.1% | 2014 | 17.5% |
| 1983 | 21.3% | 1999 | 26.8% | 2015 | 17.3% |
| 1984 | 18.8% | 2000 | 25.6% | 2016 | 17.9% |
| 1985 | 19.7% | 2001 | 22.4% | 2017 | 18% |
| 1986 | 19.8% | 2002 | 24.9% | 2018 | 16.1% |
| 1987 | 18.4% | 2003 | 27% | 2019 | 15.4% |
| 1988 | 21.6% | 2004 | 23.1% | 2020 | 14.5% |
| 1989 | 24% | 2005 | 22.9% | 2021 | 13.8% |
| 1990 | 20.9% | 2006 | 22.1% | 2022 | 12.7% |
| 1991 | 17.3% | 2007 | 20.5% | 2023 | 10.8% |
| 1992 | 14.2% | 2008 | 18.8% | 2024 | 9.5% |
| 1993 | 13.8% | 2009 | 17.1% | 2025 | 12% |
| 1994 | 17.6% | 2010 | 18.5% | 2026 | 13.1% |
| 1995 | 17.4% | 2011 | 18.2% | | |
Show data table
| 1980 | 2B | 1996 | 10.2B | 2012 | 124B |
| 1981 | 2.16B | 1997 | 10B | 2013 | 154B |
| 1982 | 2.63B | 1998 | 11.3B | 2014 | 185B |
| 1983 | 3.79B | 1999 | 15.5B | 2015 | 225B |
| 1984 | 3.17B | 2000 | 17.2B | 2016 | 281B |
| 1985 | 3.88B | 2001 | 15.4B | 2017 | 330B |
| 1986 | 4.07B | 2002 | 16.7B | 2018 | 354B |
| 1987 | 4.02B | 2003 | 20B | 2019 | 413B |
| 1988 | 4.89B | 2004 | 20.2B | 2020 | 488B |
| 1989 | 5.73B | 2005 | 24.6B | 2021 | 599B |
| 1990 | 5.28B | 2006 | 29.3B | 2022 | 782B |
| 1991 | 4.85B | 2007 | 35.6B | 2023 | 944B |
| 1992 | 4.21B | 2008 | 46.9B | 2024 | 1.12T |
| 1993 | 5.22B | 2009 | 57.8B | 2025 | 1.82T |
| 1994 | 7.09B | 2010 | 71.3B | 2026 | 2.53T |
| 1995 | 8.37B | 2011 | 93.9B | | |