Tabella dei dati
| 1988 | 31,1% | 2001 | 35,5% | 2014 | 33,7% |
| 1989 | 30,5% | 2002 | 35% | 2015 | 34,3% |
| 1990 | 30,2% | 2003 | 35,9% | 2016 | 34,7% |
| 1991 | 30,2% | 2004 | 36,1% | 2017 | 34,9% |
| 1992 | 29,3% | 2005 | 36,2% | 2018 | 35,5% |
| 1993 | 29,4% | 2006 | 36,2% | 2019 | 34,4% |
| 1994 | 29,9% | 2007 | 35,7% | 2020 | 35,6% |
| 1995 | 31% | 2008 | 33,9% | 2021 | 35,3% |
| 1996 | 32% | 2009 | 33,1% | 2022 | 35,2% |
| 1997 | 32,3% | 2010 | 31,7% | 2023 | 36,2% |
| 1998 | 34,3% | 2011 | 31,7% | 2024 | 36,5% |
| 1999 | 36,8% | 2012 | 32,9% | 2025 | 36,7% |
| 2000 | 36,4% | 2013 | 33,4% | 2026 | 36,6% |
Tabella dei dati
| 1988 | 108 mld | 2001 | 260 mld | 2014 | 546 mld |
| 1989 | 119 mld | 2002 | 275 mld | 2015 | 565 mld |
| 1990 | 125 mld | 2003 | 299 mld | 2016 | 592 mld |
| 1991 | 126 mld | 2004 | 323 mld | 2017 | 631 mld |
| 1992 | 127 mld | 2005 | 350 mld | 2018 | 675 mld |
| 1993 | 134 mld | 2006 | 378 mld | 2019 | 688 mld |
| 1994 | 145 mld | 2007 | 405 mld | 2020 | 705 mld |
| 1995 | 159 mld | 2008 | 420 mld | 2021 | 780 mld |
| 1996 | 174 mld | 2009 | 420 mld | 2022 | 878 mld |
| 1997 | 185 mld | 2010 | 434 mld | 2023 | 951 mld |
| 1998 | 208 mld | 2011 | 467 mld | 2024 | 994 mld |
| 1999 | 235 mld | 2012 | 500 mld | 2025 | 1,05 mila mld |
| 2000 | 251 mld | 2013 | 527 mld | 2026 | 1,1 mila mld |
Tabella dei dati
| 1988 | 30,6% | 2001 | 35,6% | 2014 | 36,6% |
| 1989 | 29,6% | 2002 | 34,9% | 2015 | 37,1% |
| 1990 | 30,4% | 2003 | 34,9% | 2016 | 37,1% |
| 1991 | 33% | 2004 | 34,8% | 2017 | 36,6% |
| 1992 | 34% | 2005 | 34,5% | 2018 | 36,7% |
| 1993 | 34,1% | 2006 | 34,5% | 2019 | 38,8% |
| 1994 | 33,7% | 2007 | 34,2% | 2020 | 44,3% |
| 1995 | 33,6% | 2008 | 35% | 2021 | 41,7% |
| 1996 | 33,5% | 2009 | 37,6% | 2022 | 37,4% |
| 1997 | 32,8% | 2010 | 36,8% | 2023 | 37,4% |
| 1998 | 34,6% | 2011 | 36,2% | 2024 | 38,7% |
| 1999 | 36,2% | 2012 | 36,4% | 2025 | 39,5% |
| 2000 | 35,1% | 2013 | 36,2% | 2026 | 39,1% |
Tabella dei dati
| 1988 | 106 mld | 2001 | 260 mld | 2014 | 593 mld |
| 1989 | 115 mld | 2002 | 273 mld | 2015 | 611 mld |
| 1990 | 126 mld | 2003 | 290 mld | 2016 | 633 mld |
| 1991 | 138 mld | 2004 | 312 mld | 2017 | 662 mld |
| 1992 | 147 mld | 2005 | 333 mld | 2018 | 698 mld |
| 1993 | 155 mld | 2006 | 359 mld | 2019 | 776 mld |
| 1994 | 163 mld | 2007 | 389 mld | 2020 | 877 mld |
| 1995 | 172 mld | 2008 | 433 mld | 2021 | 920 mld |
| 1996 | 182 mld | 2009 | 478 mld | 2022 | 933 mld |
| 1997 | 188 mld | 2010 | 504 mld | 2023 | 984 mld |
| 1998 | 210 mld | 2011 | 533 mld | 2024 | 1,06 mila mld |
| 1999 | 231 mld | 2012 | 553 mld | 2025 | 1,13 mila mld |
| 2000 | 242 mld | 2013 | 571 mld | 2026 | 1,18 mila mld |