Tabella dei dati
| 1998 | 54,4% | 2008 | 30,3% | 2018 | 34,5% |
| 1999 | 56% | 2009 | 36,4% | 2019 | 32,8% |
| 2000 | 34,6% | 2010 | 42,2% | 2020 | 37,2% |
| 2001 | 35,1% | 2011 | 40,9% | 2021 | 35,8% |
| 2002 | 31,1% | 2012 | 43,6% | 2022 | 31,2% |
| 2003 | 27,6% | 2013 | 43,8% | 2023 | 29% |
| 2004 | 25,5% | 2014 | 47,1% | 2024 | 29,4% |
| 2005 | 24,9% | 2015 | 46,4% | 2025 | 29,9% |
| 2006 | 20,6% | 2016 | 44,9% | 2026 | 30,8% |
| 2007 | 18,2% | 2017 | 38,6% | | |
Tabella dei dati
| 1998 | 5,02 mld | 2008 | 7,74 mld | 2018 | 11,7 mld |
| 1999 | 5,92 mld | 2009 | 9,02 mld | 2019 | 11,7 mld |
| 2000 | 4,09 mld | 2010 | 10,7 mld | 2020 | 12,9 mld |
| 2001 | 4,45 mld | 2011 | 10,7 mld | 2021 | 14 mld |
| 2002 | 4,35 mld | 2012 | 11,4 mld | 2022 | 14,2 mld |
| 2003 | 4,06 mld | 2013 | 11,7 mld | 2023 | 14,5 mld |
| 2004 | 4,08 mld | 2014 | 12,9 mld | 2024 | 15,8 mld |
| 2005 | 4,39 mld | 2015 | 13,4 mld | 2025 | 17,1 mld |
| 2006 | 4,13 mld | 2016 | 13,6 mld | 2026 | 18,8 mld |
| 2007 | 4,1 mld | 2017 | 12,3 mld | | |
Tabella dei dati
| 1998 | 50,7% | 2008 | 21,2% | 2018 | 24,5% |
| 1999 | 53,4% | 2009 | 28% | 2019 | 21,4% |
| 2000 | 32,2% | 2010 | 35,4% | 2020 | 25,8% |
| 2001 | 30,8% | 2011 | 35% | 2021 | 22,5% |
| 2002 | 26,4% | 2012 | 37,8% | 2022 | 19,6% |
| 2003 | 22,1% | 2013 | 38,4% | 2023 | 18,8% |
| 2004 | 19,7% | 2014 | 40,6% | 2024 | 20% |
| 2005 | 18,6% | 2015 | 39,3% | 2025 | 20,4% |
| 2006 | 12,8% | 2016 | 37,4% | 2026 | 21,9% |
| 2007 | 4,3% | 2017 | 29,9% | | |
Tabella dei dati
| 1998 | 4,68 mld | 2008 | 5,42 mld | 2018 | 8,33 mld |
| 1999 | 5,64 mld | 2009 | 6,95 mld | 2019 | 7,65 mld |
| 2000 | 3,8 mld | 2010 | 8,97 mld | 2020 | 8,97 mld |
| 2001 | 3,9 mld | 2011 | 9,18 mld | 2021 | 8,82 mld |
| 2002 | 3,69 mld | 2012 | 9,91 mld | 2022 | 8,93 mld |
| 2003 | 3,26 mld | 2013 | 10,3 mld | 2023 | 9,4 mld |
| 2004 | 3,16 mld | 2014 | 11,1 mld | 2024 | 10,8 mld |
| 2005 | 3,29 mld | 2015 | 11,4 mld | 2025 | 11,7 mld |
| 2006 | 2,56 mld | 2016 | 11,3 mld | 2026 | 13,4 mld |
| 2007 | 960 mln | 2017 | 9,51 mld | | |