Tabella dei dati
| 1987 | 17,3% | 2001 | 13,3% | 2015 | 12,2% |
| 1988 | 17,7% | 2002 | 15,5% | 2016 | 12,3% |
| 1989 | 16,4% | 2003 | 9,2% | 2017 | 12,1% |
| 1990 | 15,4% | 2004 | 11,3% | 2018 | 15,9% |
| 1991 | 14,6% | 2005 | 11,8% | 2019 | 17,1% |
| 1992 | 15,8% | 2006 | 22% | 2020 | 20,7% |
| 1993 | 15% | 2007 | 13,9% | 2021 | 13,3% |
| 1994 | 14,8% | 2008 | 14,8% | 2022 | 12% |
| 1995 | 15,7% | 2009 | 15,5% | 2023 | 14% |
| 1996 | 10,7% | 2010 | 15,9% | 2024 | 14,3% |
| 1997 | 12,9% | 2011 | 12% | 2025 | 15,6% |
| 1998 | 18,1% | 2012 | 14% | 2026 | 14,3% |
| 1999 | 17,7% | 2013 | 11,1% | | |
| 2000 | 15,2% | 2014 | 13,6% | | |
Tabella dei dati
| 1987 | 62,6 mld | 2001 | 87,5 mld | 2015 | 134 mld |
| 1988 | 67,3 mld | 2002 | 106 mld | 2016 | 145 mld |
| 1989 | 65,9 mld | 2003 | 63,8 mld | 2017 | 154 mld |
| 1990 | 62,4 mld | 2004 | 78,5 mld | 2018 | 211 mld |
| 1991 | 58 mld | 2005 | 88 mld | 2019 | 245 mld |
| 1992 | 59,6 mld | 2006 | 176 mld | 2020 | 298 mld |
| 1993 | 54,8 mld | 2007 | 117 mld | 2021 | 200 mld |
| 1994 | 70 mld | 2008 | 135 mld | 2022 | 191 mld |
| 1995 | 88,1 mld | 2009 | 150 mld | 2023 | 232 mld |
| 1996 | 55 mld | 2010 | 169 mld | 2024 | 249 mld |
| 1997 | 73 mld | 2011 | 138 mld | 2025 | 289 mld |
| 1998 | 109 mld | 2012 | 179 mld | 2026 | 278 mld |
| 1999 | 113 mld | 2013 | 92,7 mld | | |
| 2000 | 93,4 mld | 2014 | 138 mld | | |
Tabella dei dati
| 1987 | 21,9% | 2001 | 14,1% | 2015 | 12,7% |
| 1988 | 21,4% | 2002 | 16,7% | 2016 | 11,1% |
| 1989 | 19,6% | 2003 | 12,3% | 2017 | 13,1% |
| 1990 | 22% | 2004 | 13,1% | 2018 | 16,8% |
| 1991 | 22,6% | 2005 | 16,2% | 2019 | 15,8% |
| 1992 | 23,1% | 2006 | 13,4% | 2020 | 24% |
| 1993 | 20,6% | 2007 | 12,9% | 2021 | 19% |
| 1994 | 22,4% | 2008 | 16% | 2022 | 17,1% |
| 1995 | 20,6% | 2009 | 16% | 2023 | 17,5% |
| 1996 | 11,7% | 2010 | 17,3% | 2024 | 19,4% |
| 1997 | 14,5% | 2011 | 14,2% | 2025 | 21,1% |
| 1998 | 18,1% | 2012 | 14,7% | 2026 | 19,3% |
| 1999 | 18,2% | 2013 | 13,4% | | |
| 2000 | 17,2% | 2014 | 16,7% | | |
Tabella dei dati
| 1987 | 79,5 mld | 2001 | 93,2 mld | 2015 | 140 mld |
| 1988 | 81,5 mld | 2002 | 114 mld | 2016 | 131 mld |
| 1989 | 79 mld | 2003 | 84,9 mld | 2017 | 167 mld |
| 1990 | 89,1 mld | 2004 | 90,5 mld | 2018 | 223 mld |
| 1991 | 89,7 mld | 2005 | 121 mld | 2019 | 226 mld |
| 1992 | 87,3 mld | 2006 | 107 mld | 2020 | 345 mld |
| 1993 | 75,5 mld | 2007 | 108 mld | 2021 | 285 mld |
| 1994 | 106 mld | 2008 | 146 mld | 2022 | 273 mld |
| 1995 | 115 mld | 2009 | 156 mld | 2023 | 288 mld |
| 1996 | 60,5 mld | 2010 | 183 mld | 2024 | 336 mld |
| 1997 | 81,9 mld | 2011 | 163 mld | 2025 | 391 mld |
| 1998 | 109 mld | 2012 | 189 mld | 2026 | 375 mld |
| 1999 | 116 mld | 2013 | 112 mld | | |
| 2000 | 106 mld | 2014 | 169 mld | | |