Show data table
| 1980 | 1.17B | 1996 | 4.93B | 2012 | 13.9B |
| 1981 | 1.04B | 1997 | 5.01B | 2013 | 14.3B |
| 1982 | 1.09B | 1998 | 4.81B | 2014 | 15.5B |
| 1983 | 1.21B | 1999 | 5.41B | 2015 | 13.5B |
| 1984 | 1.2B | 2000 | 5.68B | 2016 | 15.1B |
| 1985 | 1.12B | 2001 | 5.46B | 2017 | 16.1B |
| 1986 | 1.52B | 2002 | 5.4B | 2018 | 17B |
| 1987 | 2.37B | 2003 | 7.47B | 2019 | 16.7B |
| 1988 | 3.08B | 2004 | 8.82B | 2020 | 14.9B |
| 1989 | 3.44B | 2005 | 9.83B | 2021 | 18.8B |
| 1990 | 3.8B | 2006 | 9.92B | 2022 | 20.3B |
| 1991 | 3.8B | 2007 | 10.6B | 2023 | 19.4B |
| 1992 | 3.93B | 2008 | 10.7B | 2024 | 19.4B |
| 1993 | 3.96B | 2009 | 10.1B | 2025 | 19.5B |
| 1994 | 4.26B | 2010 | 12.6B | 2026 | 21.9B |
| 1995 | 4.81B | 2011 | 15.1B | | |
Show data table
| 1980 | 879M | 1996 | 16.3B | 2012 | 106B |
| 1981 | 917M | 1997 | 18.3B | 2013 | 120B |
| 1982 | 1.17B | 1998 | 20.2B | 2014 | 139B |
| 1983 | 1.4B | 1999 | 25B | 2015 | 137B |
| 1984 | 1.82B | 2000 | 29B | 2016 | 164B |
| 1985 | 2.42B | 2001 | 31.9B | 2017 | 167B |
| 1986 | 2.81B | 2002 | 34.1B | 2018 | 174B |
| 1987 | 3.78B | 2003 | 37B | 2019 | 180B |
| 1988 | 5.88B | 2004 | 41.4B | 2020 | 171B |
| 1989 | 6.53B | 2005 | 50.3B | 2021 | 208B |
| 1990 | 7.05B | 2006 | 57.8B | 2022 | 251B |
| 1991 | 7.96B | 2007 | 64.9B | 2023 | 264B |
| 1992 | 8.74B | 2008 | 73.3B | 2024 | 263B |
| 1993 | 10.1B | 2009 | 72.4B | 2025 | 264B |
| 1994 | 11.4B | 2010 | 85.9B | 2026 | 285B |
| 1995 | 13.3B | 2011 | 103B | | |
Show data table
| 1980 | 23.6B | 1996 | 80.3B | 2012 | 137B |
| 1981 | 25.6B | 1997 | 86B | 2013 | 153B |
| 1982 | 29.6B | 1998 | 84.6B | 2014 | 161B |
| 1983 | 32.8B | 1999 | 91.4B | 2015 | 153B |
| 1984 | 35B | 2000 | 95.3B | 2016 | 164B |
| 1985 | 37.6B | 2001 | 97.5B | 2017 | 171B |
| 1986 | 40.9B | 2002 | 105B | 2018 | 178B |
| 1987 | 47B | 2003 | 110B | 2019 | 184B |
| 1988 | 58B | 2004 | 112B | 2020 | 168B |
| 1989 | 60.7B | 2005 | 118B | 2021 | 188B |
| 1990 | 66B | 2006 | 125B | 2022 | 198B |
| 1991 | 70.1B | 2007 | 132B | 2023 | 204B |
| 1992 | 70B | 2008 | 136B | 2024 | 198B |
| 1993 | 72.8B | 2009 | 117B | 2025 | 196B |
| 1994 | 72.2B | 2010 | 129B | 2026 | 206B |
| 1995 | 78.3B | 2011 | 137B | | |