Tabella dei dati
| 2000 | 17% | 2009 | 21,2% | 2018 | 21,8% |
| 2001 | 16,2% | 2010 | 20,2% | 2019 | 22,1% |
| 2002 | 17,1% | 2011 | 20,1% | 2020 | 21,6% |
| 2003 | 17,6% | 2012 | 20,1% | 2021 | 24,2% |
| 2004 | 17,7% | 2013 | 20,1% | 2022 | 24,5% |
| 2005 | 17,6% | 2014 | 19,4% | 2023 | 24% |
| 2006 | 16,8% | 2015 | 20,2% | 2024 | 25,8% |
| 2007 | 17,4% | 2016 | 20,6% | 2025 | 27,7% |
| 2008 | 19,8% | 2017 | 22% | 2026 | 28,2% |
Tabella dei dati
| 2000 | 23,1 mld | 2009 | 64,3 mld | 2018 | 111 mld |
| 2001 | 24 mld | 2010 | 65,5 mld | 2019 | 104 mld |
| 2002 | 27,8 mld | 2011 | 69,2 mld | 2020 | 98,7 mld |
| 2003 | 32 mld | 2012 | 73,8 mld | 2021 | 126 mld |
| 2004 | 34,9 mld | 2013 | 78,2 mld | 2022 | 148 mld |
| 2005 | 37,6 mld | 2014 | 79,7 mld | 2023 | 161 mld |
| 2006 | 40,7 mld | 2015 | 87,8 mld | 2024 | 186 mld |
| 2007 | 47,7 mld | 2016 | 94,7 mld | 2025 | 214 mld |
| 2008 | 57,7 mld | 2017 | 107 mld | 2026 | 234 mld |
Tabella dei dati
| 1999 | 25,9% | 2009 | 24,5% | 2019 | 30,2% |
| 2000 | 21,2% | 2010 | 23,2% | 2020 | 32,1% |
| 2001 | 21,5% | 2011 | 23% | 2021 | 28,3% |
| 2002 | 22% | 2012 | 21,9% | 2022 | 27,6% |
| 2003 | 22,2% | 2013 | 23,4% | 2023 | 28,5% |
| 2004 | 21,9% | 2014 | 22,5% | 2024 | 32,6% |
| 2005 | 21,8% | 2015 | 23,7% | 2025 | 31,4% |
| 2006 | 20,7% | 2016 | 23,3% | 2026 | 31,3% |
| 2007 | 20,4% | 2017 | 23,6% | | |
| 2008 | 22,4% | 2018 | 23,9% | | |
Tabella dei dati
| 1990 | 12,3 mld | 2003 | 40,3 mld | 2016 | 107 mld |
| 1991 | 12,8 mld | 2004 | 43,2 mld | 2017 | 115 mld |
| 1992 | 14,2 mld | 2005 | 46,6 mld | 2018 | 122 mld |
| 1993 | 15,1 mld | 2006 | 50,1 mld | 2019 | 142 mld |
| 1994 | 19,2 mld | 2007 | 55,7 mld | 2020 | 146 mld |
| 1995 | 21,1 mld | 2008 | 65,4 mld | 2021 | 148 mld |
| 1996 | 22,6 mld | 2009 | 74,4 mld | 2022 | 167 mld |
| 1997 | 25 mld | 2010 | 75 mld | 2023 | 191 mld |
| 1998 | 27,8 mld | 2011 | 79,6 mld | 2024 | 235 mld |
| 1999 | 31,8 mld | 2012 | 80,1 mld | 2025 | 243 mld |
| 2000 | 28,8 mld | 2013 | 91 mld | 2026 | 260 mld |
| 2001 | 31,9 mld | 2014 | 92,2 mld | | |
| 2002 | 35,7 mld | 2015 | 103 mld | | |