Tabella dei dati
| 1990 | 80,4% | 2003 | 177% | 2016 | 64,3% |
| 1991 | 89,2% | 2004 | 163,2% | 2017 | 56,7% |
| 1992 | 79,9% | 2005 | 144,1% | 2018 | 51,3% |
| 1993 | 82,2% | 2006 | 135,1% | 2019 | 48,9% |
| 1994 | 123,5% | 2007 | 144% | 2020 | 77,4% |
| 1995 | 133,5% | 2008 | 192,1% | 2021 | 71% |
| 1996 | 146,7% | 2009 | 106,1% | 2022 | 60,6% |
| 1997 | 143% | 2010 | 82,2% | 2023 | 55,1% |
| 1998 | 161,2% | 2011 | 82,5% | 2024 | 56,1% |
| 1999 | 159,8% | 2012 | 80,1% | 2025 | 51,5% |
| 2000 | 177,8% | 2013 | 68,2% | 2026 | 55% |
| 2001 | 199,8% | 2014 | 70,4% | | |
| 2002 | 195,9% | 2015 | 75,4% | | |
Tabella dei dati
| 1990 | 1,58 mld | 2003 | 6,75 mld | 2016 | 13,4 mld |
| 1991 | 1,77 mld | 2004 | 7,54 mld | 2017 | 13 mld |
| 1992 | 1,78 mld | 2005 | 7,28 mld | 2018 | 12,7 mld |
| 1993 | 2,02 mld | 2006 | 7,58 mld | 2019 | 12,8 mld |
| 1994 | 3,04 mld | 2007 | 9,97 mld | 2020 | 18,8 mld |
| 1995 | 3,23 mld | 2008 | 17,6 mld | 2021 | 17,9 mld |
| 1996 | 3,67 mld | 2009 | 12,2 mld | 2022 | 17,3 mld |
| 1997 | 4,05 mld | 2010 | 9,63 mld | 2023 | 16,8 mld |
| 1998 | 5,16 mld | 2011 | 10,4 mld | 2024 | 18,2 mld |
| 1999 | 5,32 mld | 2012 | 11,6 mld | 2025 | 17,6 mld |
| 2000 | 6,25 mld | 2013 | 10,9 mld | 2026 | 19,4 mld |
| 2001 | 7,28 mld | 2014 | 12,5 mld | | |
| 2002 | 7,49 mld | 2015 | 14,4 mld | | |
Tabella dei dati
| 2000 | 177,8% | 2009 | 101,8% | 2018 | 39,5% |
| 2001 | 192,4% | 2010 | 76,1% | 2019 | 38,8% |
| 2002 | 187,5% | 2011 | 77,4% | 2020 | 69,9% |
| 2003 | 169,8% | 2012 | 67,6% | 2021 | 60,7% |
| 2004 | 154,6% | 2013 | 56,4% | 2022 | 53,6% |
| 2005 | 137,3% | 2014 | 53,6% | 2023 | 49,4% |
| 2006 | 125,9% | 2015 | 58% | 2024 | 46,7% |
| 2007 | 140% | 2016 | 47,8% | 2025 | 44,7% |
| 2008 | 188,2% | 2017 | 43,5% | 2026 | 48,4% |
Tabella dei dati
| 2000 | 6,25 mld | 2009 | 11,7 mld | 2018 | 9,79 mld |
| 2001 | 7,01 mld | 2010 | 8,91 mld | 2019 | 10,2 mld |
| 2002 | 7,17 mld | 2011 | 9,76 mld | 2020 | 17 mld |
| 2003 | 6,47 mld | 2012 | 9,81 mld | 2021 | 15,3 mld |
| 2004 | 7,14 mld | 2013 | 9,03 mld | 2022 | 15,3 mld |
| 2005 | 6,94 mld | 2014 | 9,48 mld | 2023 | 15 mld |
| 2006 | 7,07 mld | 2015 | 11,1 mld | 2024 | 15,1 mld |
| 2007 | 9,7 mld | 2016 | 9,99 mld | 2025 | 15,2 mld |
| 2008 | 17,2 mld | 2017 | 9,94 mld | 2026 | 17,1 mld |