Show data table
| 1980 | 2.26B | 1996 | 5.54B | 2012 | 21.7B |
| 1981 | 2.64B | 1997 | 6.03B | 2013 | 22.2B |
| 1982 | 2.67B | 1998 | 5.99B | 2014 | 22.7B |
| 1983 | 2.92B | 1999 | 6.16B | 2015 | 24.4B |
| 1984 | 3.09B | 2000 | 6.54B | 2016 | 24.5B |
| 1985 | 3.21B | 2001 | 6.72B | 2017 | 29B |
| 1986 | 3.49B | 2002 | 6.82B | 2018 | 33.1B |
| 1987 | 3.62B | 2003 | 7.22B | 2019 | 34.2B |
| 1988 | 4.27B | 2004 | 8.3B | 2020 | 33.4B |
| 1989 | 4.32B | 2005 | 9.33B | 2021 | 36.9B |
| 1990 | 4.44B | 2006 | 10.3B | 2022 | 41.2B |
| 1991 | 4.86B | 2007 | 11.8B | 2023 | 41B |
| 1992 | 4.42B | 2008 | 14.3B | 2024 | 42.9B |
| 1993 | 4.74B | 2009 | 14.7B | 2025 | 44.8B |
| 1994 | 4.95B | 2010 | 18.3B | 2026 | 45.8B |
| 1995 | 5.38B | 2011 | 21.7B | | |
Show data table
| 1980 | 27.1B | 1996 | 305B | 2012 | 1.76T |
| 1981 | 31.7B | 1997 | 343B | 2013 | 1.95T |
| 1982 | 34.5B | 1998 | 368B | 2014 | 2.23T |
| 1983 | 40.3B | 1999 | 419B | 2015 | 2.42T |
| 1984 | 47.6B | 2000 | 465B | 2016 | 2.61T |
| 1985 | 57B | 2001 | 504B | 2017 | 3.08T |
| 1986 | 68.2B | 2002 | 524B | 2018 | 3.46T |
| 1987 | 78.2B | 2003 | 561B | 2019 | 3.86T |
| 1988 | 94.2B | 2004 | 612B | 2020 | 3.89T |
| 1989 | 109B | 2005 | 672B | 2021 | 4.35T |
| 1990 | 127B | 2006 | 746B | 2022 | 4.98T |
| 1991 | 152B | 2007 | 830B | 2023 | 5.37T |
| 1992 | 187B | 2008 | 930B | 2024 | 5.71T |
| 1993 | 215B | 2009 | 1.13T | 2025 | 6.11T |
| 1994 | 244B | 2010 | 1.36T | 2026 | 6.5T |
| 1995 | 268B | 2011 | 1.56T | | |
Show data table
| 1980 | 394B | 1996 | 848B | 2012 | 1.63T |
| 1981 | 427B | 1997 | 893B | 2013 | 1.69T |
| 1982 | 443B | 1998 | 919B | 2014 | 1.79T |
| 1983 | 430B | 1999 | 960B | 2015 | 1.86T |
| 1984 | 471B | 2000 | 1.02T | 2016 | 1.87T |
| 1985 | 500B | 2001 | 1.08T | 2017 | 2.04T |
| 1986 | 523B | 2002 | 1.08T | 2018 | 2.19T |
| 1987 | 532B | 2003 | 1.12T | 2019 | 2.34T |
| 1988 | 573B | 2004 | 1.17T | 2020 | 2.28T |
| 1989 | 598B | 2005 | 1.21T | 2021 | 2.39T |
| 1990 | 625B | 2006 | 1.25T | 2022 | 2.53T |
| 1991 | 665B | 2007 | 1.3T | 2023 | 2.58T |
| 1992 | 692B | 2008 | 1.38T | 2024 | 2.67T |
| 1993 | 719B | 2009 | 1.44T | 2025 | 2.8T |
| 1994 | 778B | 2010 | 1.51T | 2026 | 2.88T |
| 1995 | 805B | 2011 | 1.56T | | |