Tabella dei dati
| 1995 | 45,3% | 2006 | 64,5% | 2017 | 45,6% |
| 1996 | 51,5% | 2007 | 62% | 2018 | 41,4% |
| 1997 | 60,8% | 2008 | 61,5% | 2019 | 39,2% |
| 1998 | 66,4% | 2009 | 66% | 2020 | 48,6% |
| 1999 | 69,8% | 2010 | 65% | 2021 | 49,6% |
| 2000 | 64,4% | 2011 | 68,9% | 2022 | 50,1% |
| 2001 | 70% | 2012 | 65,6% | 2023 | 46,8% |
| 2002 | 65,1% | 2013 | 64,9% | 2024 | 46% |
| 2003 | 68,6% | 2014 | 60,7% | 2025 | 46,8% |
| 2004 | 70,4% | 2015 | 55% | 2026 | 47,3% |
| 2005 | 70,2% | 2016 | 53,1% | | |
Tabella dei dati
| 1995 | 1,25 mld | 2006 | 3,47 mld | 2017 | 5,71 mld |
| 1996 | 1,48 mld | 2007 | 3,59 mld | 2018 | 5,67 mld |
| 1997 | 1,89 mld | 2008 | 3,84 mld | 2019 | 5,73 mld |
| 1998 | 2,2 mld | 2009 | 4,15 mld | 2020 | 6,98 mld |
| 1999 | 2,48 mld | 2010 | 4,46 mld | 2021 | 8,27 mld |
| 2000 | 2,65 mld | 2011 | 4,85 mld | 2022 | 9,01 mld |
| 2001 | 2,99 mld | 2012 | 4,91 mld | 2023 | 9,79 mld |
| 2002 | 2,93 mld | 2013 | 5,28 mld | 2024 | 10,7 mld |
| 2003 | 3,27 mld | 2014 | 5,44 mld | 2025 | 11,5 mld |
| 2004 | 3,45 mld | 2015 | 5,63 mld | 2026 | 12,3 mld |
| 2005 | 3,61 mld | 2016 | 5,77 mld | | |
Tabella dei dati
| 2000 | 57,2% | 2009 | 55,7% | 2018 | 30,9% |
| 2001 | 62,9% | 2010 | 54,7% | 2019 | 28,2% |
| 2002 | 59,4% | 2011 | 56,9% | 2020 | 38,4% |
| 2003 | 61,4% | 2012 | 56% | 2021 | 39,7% |
| 2004 | 63,1% | 2013 | 55,9% | 2022 | 40,3% |
| 2005 | 61,6% | 2014 | 51,4% | 2023 | 36,7% |
| 2006 | 55,8% | 2015 | 46,8% | 2024 | 36,5% |
| 2007 | 52,4% | 2016 | 40,6% | 2025 | 37,5% |
| 2008 | 52,9% | 2017 | 33,5% | 2026 | 38,2% |
Tabella dei dati
| 2000 | 2,36 mld | 2009 | 3,5 mld | 2018 | 4,23 mld |
| 2001 | 2,69 mld | 2010 | 3,76 mld | 2019 | 4,12 mld |
| 2002 | 2,67 mld | 2011 | 4 mld | 2020 | 5,52 mld |
| 2003 | 2,92 mld | 2012 | 4,19 mld | 2021 | 6,62 mld |
| 2004 | 3,09 mld | 2013 | 4,55 mld | 2022 | 7,26 mld |
| 2005 | 3,17 mld | 2014 | 4,6 mld | 2023 | 7,67 mld |
| 2006 | 3 mld | 2015 | 4,78 mld | 2024 | 8,45 mld |
| 2007 | 3,03 mld | 2016 | 4,41 mld | 2025 | 9,21 mld |
| 2008 | 3,3 mld | 2017 | 4,2 mld | 2026 | 9,96 mld |