Show data table
| 1980 | 606M | 1996 | 949M | 2012 | 1.42B |
| 1981 | 580M | 1997 | 983M | 2013 | 1.38B |
| 1982 | 547M | 1998 | 1.01B | 2014 | 1.23B |
| 1983 | 550M | 1999 | 1.04B | 2015 | 1.35B |
| 1984 | 396M | 2000 | 1.01B | 2016 | 1.47B |
| 1985 | 482M | 2001 | 1B | 2017 | 1.5B |
| 1986 | 376M | 2002 | 887M | 2018 | 1.66B |
| 1987 | 504M | 2003 | 843M | 2019 | 1.81B |
| 1988 | 585M | 2004 | 962M | 2020 | 1.81B |
| 1989 | 614M | 2005 | 1.03B | 2021 | 2.04B |
| 1990 | 721M | 2006 | 1.05B | 2022 | 2.13B |
| 1991 | 760M | 2007 | 1.28B | 2023 | 2.33B |
| 1992 | 820M | 2008 | 1.56B | 2024 | 2.4B |
| 1993 | 878M | 2009 | 1.45B | 2025 | 2.58B |
| 1994 | 870M | 2010 | 1.54B | 2026 | 2.79B |
| 1995 | 909M | 2011 | 1.41B | | |
Show data table
| 1980 | 1.04B | 1996 | 9.3B | 2012 | 45.4B |
| 1981 | 1.14B | 1997 | 10B | 2013 | 49.5B |
| 1982 | 1.25B | 1998 | 10.7B | 2014 | 51.3B |
| 1983 | 1.45B | 1999 | 11.8B | 2015 | 58.6B |
| 1984 | 1.48B | 2000 | 12.9B | 2016 | 64.4B |
| 1985 | 1.88B | 2001 | 15.7B | 2017 | 70.1B |
| 1986 | 2.6B | 2002 | 17.7B | 2018 | 80.4B |
| 1987 | 3.56B | 2003 | 24B | 2019 | 90.8B |
| 1988 | 3.92B | 2004 | 28.9B | 2020 | 93.3B |
| 1989 | 4.66B | 2005 | 29.4B | 2021 | 105B |
| 1990 | 5.68B | 2006 | 29.6B | 2022 | 121B |
| 1991 | 6.64B | 2007 | 31.8B | 2023 | 146B |
| 1992 | 7.3B | 2008 | 34.7B | 2024 | 163B |
| 1993 | 8.01B | 2009 | 38.6B | 2025 | 185B |
| 1994 | 8.33B | 2010 | 43.2B | 2026 | 206B |
| 1995 | 8.68B | 2011 | 41.5B | | |
Show data table
| 1980 | 18.8B | 1996 | 29.2B | 2012 | 48.1B |
| 1981 | 17B | 1997 | 29.6B | 2013 | 49.5B |
| 1982 | 20.5B | 1998 | 31.5B | 2014 | 48.8B |
| 1983 | 23.3B | 1999 | 33.5B | 2015 | 50.7B |
| 1984 | 21.5B | 2000 | 35.4B | 2016 | 51.7B |
| 1985 | 22.3B | 2001 | 37.4B | 2017 | 54.2B |
| 1986 | 22.8B | 2002 | 36.2B | 2018 | 58.2B |
| 1987 | 23.5B | 2003 | 38.7B | 2019 | 61.8B |
| 1988 | 23.9B | 2004 | 41.4B | 2020 | 62.1B |
| 1989 | 24.9B | 2005 | 40.4B | 2021 | 65.4B |
| 1990 | 26.3B | 2006 | 40.2B | 2022 | 69B |
| 1991 | 26.9B | 2007 | 41.4B | 2023 | 73.1B |
| 1992 | 27.4B | 2008 | 44B | 2024 | 77.1B |
| 1993 | 28.4B | 2009 | 47B | 2025 | 81.8B |
| 1994 | 27.4B | 2010 | 49.7B | 2026 | 85.9B |
| 1995 | 28.3B | 2011 | 45.7B | | |