Show data table
| 1980 | 53.7B | 1996 | 132B | 2012 | 258B |
| 1981 | 52.6B | 1997 | 127B | 2013 | 270B |
| 1982 | 53.1B | 1998 | 134B | 2014 | 274B |
| 1983 | 51.1B | 1999 | 135B | 2015 | 233B |
| 1984 | 53B | 2000 | 126B | 2016 | 239B |
| 1985 | 56.2B | 2001 | 130B | 2017 | 254B |
| 1986 | 73.7B | 2002 | 140B | 2018 | 274B |
| 1987 | 91.8B | 2003 | 172B | 2019 | 267B |
| 1988 | 109B | 2004 | 197B | 2020 | 270B |
| 1989 | 119B | 2005 | 205B | 2021 | 294B |
| 1990 | 142B | 2006 | 217B | 2022 | 280B |
| 1991 | 128B | 2007 | 256B | 2023 | 295B |
| 1992 | 113B | 2008 | 286B | 2024 | 299B |
| 1993 | 89.2B | 2009 | 253B | 2025 | 317B |
| 1994 | 104B | 2010 | 250B | 2026 | 338B |
| 1995 | 134B | 2011 | 275B | | |
Show data table
| 1980 | 33.7B | 1996 | 102B | 2012 | 200B |
| 1981 | 38.1B | 1997 | 111B | 2013 | 203B |
| 1982 | 42.8B | 1998 | 120B | 2014 | 206B |
| 1983 | 47.8B | 1999 | 127B | 2015 | 210B |
| 1984 | 53.5B | 2000 | 136B | 2016 | 216B |
| 1985 | 58.3B | 2001 | 145B | 2017 | 225B |
| 1986 | 62.7B | 2002 | 148B | 2018 | 232B |
| 1987 | 67.8B | 2003 | 152B | 2019 | 239B |
| 1988 | 76.8B | 2004 | 159B | 2020 | 236B |
| 1989 | 85.9B | 2005 | 165B | 2021 | 249B |
| 1990 | 91B | 2006 | 173B | 2022 | 266B |
| 1991 | 86.9B | 2007 | 187B | 2023 | 273B |
| 1992 | 84.8B | 2008 | 194B | 2024 | 276B |
| 1993 | 85.6B | 2009 | 182B | 2025 | 281B |
| 1994 | 90.6B | 2010 | 188B | 2026 | 286B |
| 1995 | 98.5B | 2011 | 198B | | |
Show data table
| 1980 | 104B | 1996 | 143B | 2012 | 212B |
| 1981 | 105B | 1997 | 152B | 2013 | 210B |
| 1982 | 108B | 1998 | 160B | 2014 | 209B |
| 1983 | 112B | 1999 | 167B | 2015 | 210B |
| 1984 | 115B | 2000 | 177B | 2016 | 216B |
| 1985 | 119B | 2001 | 181B | 2017 | 223B |
| 1986 | 123B | 2002 | 184B | 2018 | 225B |
| 1987 | 127B | 2003 | 188B | 2019 | 228B |
| 1988 | 134B | 2004 | 196B | 2020 | 223B |
| 1989 | 140B | 2005 | 201B | 2021 | 229B |
| 1990 | 141B | 2006 | 209B | 2022 | 230B |
| 1991 | 132B | 2007 | 220B | 2023 | 227B |
| 1992 | 128B | 2008 | 222B | 2024 | 228B |
| 1993 | 127B | 2009 | 204B | 2025 | 229B |
| 1994 | 132B | 2010 | 211B | 2026 | 231B |
| 1995 | 138B | 2011 | 216B | | |