Tabella dei dati
| 1996 | 41,2% | 2007 | 41,4% | 2018 | 39,6% |
| 1997 | 40% | 2008 | 49,1% | 2019 | 38,3% |
| 1998 | 44,9% | 2009 | 44,5% | 2020 | 35,2% |
| 1999 | 45,6% | 2010 | 40,1% | 2021 | 36,5% |
| 2000 | 44,3% | 2011 | 37,5% | 2022 | 36% |
| 2001 | 37,6% | 2012 | 39,3% | 2023 | 41,1% |
| 2002 | 36% | 2013 | 39,8% | 2024 | 41,3% |
| 2003 | 36,8% | 2014 | 38,9% | 2025 | 41,4% |
| 2004 | 36,9% | 2015 | 38,8% | 2026 | 41,1% |
| 2005 | 38,3% | 2016 | 39% | | |
| 2006 | 39,5% | 2017 | 38,7% | | |
Tabella dei dati
| 1996 | 8 mln | 2007 | 4,15 mld | 2018 | 48,5 mld |
| 1997 | 15 mln | 2008 | 6,59 mld | 2019 | 51,6 mld |
| 1998 | 32 mln | 2009 | 6,32 mld | 2020 | 52,7 mld |
| 1999 | 138 mln | 2010 | 6,84 mld | 2021 | 63,2 mld |
| 2000 | 419 mln | 2011 | 11,5 mld | 2022 | 69,8 mld |
| 2001 | 669 mln | 2012 | 21,5 mld | 2023 | 88,8 mld |
| 2002 | 972 mln | 2013 | 26,7 mld | 2024 | 105 mld |
| 2003 | 1,39 mld | 2014 | 31,4 mld | 2025 | 118 mld |
| 2004 | 1,91 mld | 2015 | 34,9 mld | 2026 | 128 mld |
| 2005 | 2,58 mld | 2016 | 37,1 mld | | |
| 2006 | 3,24 mld | 2017 | 40,9 mld | | |
Tabella dei dati
| 2001 | 42,4% | 2010 | 44,3% | 2019 | 37,4% |
| 2002 | 43,8% | 2011 | 40,3% | 2020 | 38% |
| 2003 | 43,5% | 2012 | 38,9% | 2021 | 36,7% |
| 2004 | 44% | 2013 | 40,8% | 2022 | 38% |
| 2005 | 45% | 2014 | 38,8% | 2023 | 40,3% |
| 2006 | 47,2% | 2015 | 41,8% | 2024 | 40,8% |
| 2007 | 49,2% | 2016 | 40,7% | 2025 | 41,3% |
| 2008 | 60% | 2017 | 39% | 2026 | 41,3% |
| 2009 | 51,7% | 2018 | 37,8% | | |
Tabella dei dati
| 2001 | 753 mln | 2010 | 7,56 mld | 2019 | 50,3 mld |
| 2002 | 1,18 mld | 2011 | 12,4 mld | 2020 | 57 mld |
| 2003 | 1,65 mld | 2012 | 21,3 mld | 2021 | 63,6 mld |
| 2004 | 2,28 mld | 2013 | 27,4 mld | 2022 | 73,6 mld |
| 2005 | 3,03 mld | 2014 | 31,3 mld | 2023 | 87,2 mld |
| 2006 | 3,87 mld | 2015 | 37,6 mld | 2024 | 104 mld |
| 2007 | 4,94 mld | 2016 | 38,6 mld | 2025 | 118 mld |
| 2008 | 8,05 mld | 2017 | 41,3 mld | 2026 | 128 mld |
| 2009 | 7,35 mld | 2018 | 46,3 mld | | |