Tabella dei dati
| 1990 | 12,6% | 2003 | 38,8% | 2016 | 46,7% |
| 1991 | 21,8% | 2004 | 30,1% | 2017 | 51,6% |
| 1992 | 19,9% | 2005 | 19,1% | 2018 | 52,2% |
| 1993 | 46,3% | 2006 | 13,9% | 2019 | 62,1% |
| 1994 | 54,8% | 2007 | 9,4% | 2020 | 72,6% |
| 1995 | 50,2% | 2008 | 11,4% | 2021 | 58,4% |
| 1996 | 57,8% | 2009 | 36% | 2022 | 42,6% |
| 1997 | 54,4% | 2010 | 30,4% | 2023 | 42,8% |
| 1998 | 76,6% | 2011 | 33,5% | 2024 | 41,3% |
| 1999 | 81,8% | 2012 | 32,1% | 2025 | 41,4% |
| 2000 | 51,6% | 2013 | 30,9% | 2026 | 43,3% |
| 2001 | 59,2% | 2014 | 24,9% | | |
| 2002 | 47,7% | 2015 | 35,5% | | |
Tabella dei dati
| 1990 | 2,87 mld | 2003 | 33,5 mld | 2016 | 258 mld |
| 1991 | 4,42 mld | 2004 | 33,5 mld | 2017 | 302 mld |
| 1992 | 4,63 mld | 2005 | 31,1 mld | 2018 | 348 mld |
| 1993 | 9,78 mld | 2006 | 29,8 mld | 2019 | 399 mld |
| 1994 | 11,9 mld | 2007 | 25,9 mld | 2020 | 382 mld |
| 1995 | 12,5 mld | 2008 | 46,6 mld | 2021 | 382 mld |
| 1996 | 16,3 mld | 2009 | 116 mld | 2022 | 365 mld |
| 1997 | 19,7 mld | 2010 | 133 mld | 2023 | 339 mld |
| 1998 | 23,7 mld | 2011 | 204 mld | 2024 | 329 mld |
| 1999 | 33,6 mld | 2012 | 218 mld | 2025 | 333 mld |
| 2000 | 34 mld | 2013 | 223 mld | 2026 | 343 mld |
| 2001 | 37,7 mld | 2014 | 187 mld | | |
| 2002 | 33,5 mld | 2015 | 209 mld | | |