Tabella dei dati
| 1994 | 30,9% | 2005 | 20,9% | 2016 | 19,5% |
| 1995 | 31,9% | 2006 | 23% | 2017 | 19,3% |
| 1996 | 27,1% | 2007 | 25,4% | 2018 | 18,9% |
| 1997 | 26,2% | 2008 | 23,4% | 2019 | 17,7% |
| 1998 | 24,7% | 2009 | 22% | 2020 | 17,3% |
| 1999 | 24,5% | 2010 | 22,7% | 2021 | 17,3% |
| 2000 | 26,9% | 2011 | 21,7% | 2022 | 17,4% |
| 2001 | 24,7% | 2012 | 21,7% | 2023 | 17,5% |
| 2002 | 24,1% | 2013 | 21,2% | 2024 | 16,9% |
| 2003 | 23,3% | 2014 | 19,9% | 2025 | 17,3% |
| 2004 | 19,9% | 2015 | 19,2% | 2026 | 18% |
Tabella dei dati
| 1994 | 2,36 mld | 2005 | 3,47 mld | 2016 | 11,6 mld |
| 1995 | 2,49 mld | 2006 | 4,28 mld | 2017 | 12,4 mld |
| 1996 | 2,49 mld | 2007 | 5,51 mld | 2018 | 12,8 mld |
| 1997 | 2,63 mld | 2008 | 6,02 mld | 2019 | 12,4 mld |
| 1998 | 2,72 mld | 2009 | 6,13 mld | 2020 | 9,89 mld |
| 1999 | 2,86 mld | 2010 | 6,87 mld | 2021 | 11,7 mld |
| 2000 | 3,22 mld | 2011 | 7,76 mld | 2022 | 13,3 mld |
| 2001 | 3,03 mld | 2012 | 9,01 mld | 2023 | 14,7 mld |
| 2002 | 3,08 mld | 2013 | 9,95 mld | 2024 | 14,6 mld |
| 2003 | 3,17 mld | 2014 | 10,2 mld | 2025 | 15,6 mld |
| 2004 | 3 mld | 2015 | 10,7 mld | 2026 | 17,1 mld |
Tabella dei dati
| 1994 | 28,5% | 2005 | 23,2% | 2016 | 21,3% |
| 1995 | 29,3% | 2006 | 22,4% | 2017 | 21,1% |
| 1996 | 24,3% | 2007 | 22,2% | 2018 | 21,7% |
| 1997 | 24,8% | 2008 | 23% | 2019 | 20,5% |
| 1998 | 25,9% | 2009 | 22,9% | 2020 | 27% |
| 1999 | 25,2% | 2010 | 24,4% | 2021 | 23,7% |
| 2000 | 24,7% | 2011 | 23,7% | 2022 | 21,3% |
| 2001 | 25,2% | 2012 | 23% | 2023 | 21,4% |
| 2002 | 25,1% | 2013 | 23,6% | 2024 | 23,1% |
| 2003 | 25,7% | 2014 | 22,9% | 2025 | 20,9% |
| 2004 | 24,4% | 2015 | 21,4% | 2026 | 21,4% |
Tabella dei dati
| 1994 | 2,17 mld | 2005 | 3,86 mld | 2016 | 12,7 mld |
| 1995 | 2,29 mld | 2006 | 4,18 mld | 2017 | 13,6 mld |
| 1996 | 2,23 mld | 2007 | 4,82 mld | 2018 | 14,6 mld |
| 1997 | 2,49 mld | 2008 | 5,92 mld | 2019 | 14,3 mld |
| 1998 | 2,86 mld | 2009 | 6,38 mld | 2020 | 15,4 mld |
| 1999 | 2,94 mld | 2010 | 7,39 mld | 2021 | 16 mld |
| 2000 | 2,95 mld | 2011 | 8,47 mld | 2022 | 16,3 mld |
| 2001 | 3,09 mld | 2012 | 9,56 mld | 2023 | 17,9 mld |
| 2002 | 3,21 mld | 2013 | 11,1 mld | 2024 | 20 mld |
| 2003 | 3,49 mld | 2014 | 11,8 mld | 2025 | 18,9 mld |
| 2004 | 3,69 mld | 2015 | 11,9 mld | 2026 | 20,3 mld |