Tabella dei dati
| 1990 | 26,9% | 2003 | 21,7% | 2016 | 25,1% |
| 1991 | 26,8% | 2004 | 23% | 2017 | 23,7% |
| 1992 | 28,7% | 2005 | 25% | 2018 | 23,9% |
| 1993 | 28,2% | 2006 | 24,1% | 2019 | 23,9% |
| 1994 | 26% | 2007 | 24,7% | 2020 | 23,2% |
| 1995 | 21,9% | 2008 | 29,4% | 2021 | 20,1% |
| 1996 | 21,9% | 2009 | 27,1% | 2022 | 19,5% |
| 1997 | 22,1% | 2010 | 25,6% | 2023 | 18,1% |
| 1998 | 20,4% | 2011 | 24,1% | 2024 | 18,6% |
| 1999 | 18,3% | 2012 | 24,4% | 2025 | 18,8% |
| 2000 | 19,2% | 2013 | 26,5% | 2026 | 19,1% |
| 2001 | 17,4% | 2014 | 22,1% | | |
| 2002 | 18,8% | 2015 | 26,4% | | |
Tabella dei dati
| 1990 | 30,4 mld | 2003 | 34 mld | 2016 | 116 mld |
| 1991 | 31 mld | 2004 | 38,3 mld | 2017 | 116 mld |
| 1992 | 34,3 mld | 2005 | 44,3 mld | 2018 | 124 mld |
| 1993 | 32,8 mld | 2006 | 46,3 mld | 2019 | 131 mld |
| 1994 | 31,9 mld | 2007 | 52,3 mld | 2020 | 130 mld |
| 1995 | 27,2 mld | 2008 | 72,3 mld | 2021 | 121 mld |
| 1996 | 27 mld | 2009 | 68,7 mld | 2022 | 123 mld |
| 1997 | 27,8 mld | 2010 | 70,2 mld | 2023 | 126 mld |
| 1998 | 26,2 mld | 2011 | 74,5 mld | 2024 | 137 mld |
| 1999 | 24,7 mld | 2012 | 82,6 mld | 2025 | 147 mld |
| 2000 | 26,7 mld | 2013 | 96,2 mld | 2026 | 160 mld |
| 2001 | 25 mld | 2014 | 87,1 mld | | |
| 2002 | 28 mld | 2015 | 114 mld | | |
Tabella dei dati
| 1990 | 30,2% | 2003 | 25,8% | 2016 | 25,9% |
| 1991 | 27,7% | 2004 | 26,7% | 2017 | 23,9% |
| 1992 | 34,9% | 2005 | 26,2% | 2018 | 25,9% |
| 1993 | 35,3% | 2006 | 23,9% | 2019 | 24,9% |
| 1994 | 30,9% | 2007 | 26,6% | 2020 | 25,8% |
| 1995 | 27% | 2008 | 28,8% | 2021 | 23,1% |
| 1996 | 23,7% | 2009 | 31% | 2022 | 21% |
| 1997 | 25% | 2010 | 26,6% | 2023 | 21,6% |
| 1998 | 24% | 2011 | 25,3% | 2024 | 21,3% |
| 1999 | 23,5% | 2012 | 26,5% | 2025 | 19,5% |
| 2000 | 23,2% | 2013 | 26,8% | 2026 | 19,5% |
| 2001 | 21% | 2014 | 29% | | |
| 2002 | 23,4% | 2015 | 42% | | |
Tabella dei dati
| 1990 | 34,1 mld | 2003 | 40,5 mld | 2016 | 120 mld |
| 1991 | 32 mld | 2004 | 44,4 mld | 2017 | 117 mld |
| 1992 | 41,6 mld | 2005 | 46,4 mld | 2018 | 134 mld |
| 1993 | 41,1 mld | 2006 | 45,8 mld | 2019 | 137 mld |
| 1994 | 38 mld | 2007 | 56,2 mld | 2020 | 144 mld |
| 1995 | 33,5 mld | 2008 | 70,8 mld | 2021 | 139 mld |
| 1996 | 29,2 mld | 2009 | 78,6 mld | 2022 | 133 mld |
| 1997 | 31,4 mld | 2010 | 73,1 mld | 2023 | 150 mld |
| 1998 | 30,8 mld | 2011 | 78,2 mld | 2024 | 157 mld |
| 1999 | 31,7 mld | 2012 | 89,5 mld | 2025 | 152 mld |
| 2000 | 32,2 mld | 2013 | 97,4 mld | 2026 | 164 mld |
| 2001 | 30,2 mld | 2014 | 114 mld | | |
| 2002 | 34,8 mld | 2015 | 181 mld | | |