Tabella dei dati
| 2000 | 37,1% | 2009 | 38% | 2018 | 36,3% |
| 2001 | 37,9% | 2010 | 37,8% | 2019 | 35,6% |
| 2002 | 38% | 2011 | 38,5% | 2020 | 33,4% |
| 2003 | 36,5% | 2012 | 38,4% | 2021 | 32,5% |
| 2004 | 37,7% | 2013 | 37,9% | 2022 | 33% |
| 2005 | 39,7% | 2014 | 38,1% | 2023 | 31,4% |
| 2006 | 40% | 2015 | 37% | 2024 | 33,9% |
| 2007 | 39,1% | 2016 | 36,6% | 2025 | 33,9% |
| 2008 | 38,1% | 2017 | 36,1% | 2026 | 33,1% |
Tabella dei dati
| 2000 | 1,53 mld | 2009 | 2,39 mld | 2018 | 4,97 mld |
| 2001 | 1,62 mld | 2010 | 2,6 mld | 2019 | 5,2 mld |
| 2002 | 1,71 mld | 2011 | 2,71 mld | 2020 | 4,79 mld |
| 2003 | 1,74 mld | 2012 | 2,87 mld | 2021 | 5,42 mld |
| 2004 | 1,85 mld | 2013 | 3,08 mld | 2022 | 5,94 mld |
| 2005 | 2,04 mld | 2014 | 3,41 mld | 2023 | 6,57 mld |
| 2006 | 2,15 mld | 2015 | 3,78 mld | 2024 | 7,83 mld |
| 2007 | 2,26 mld | 2016 | 3,97 mld | 2025 | 8,32 mld |
| 2008 | 2,37 mld | 2017 | 4,53 mld | 2026 | 8,61 mld |
Tabella dei dati
| 2000 | 42,9% | 2009 | 41,1% | 2018 | 34,5% |
| 2001 | 44,4% | 2010 | 40,1% | 2019 | 34,9% |
| 2002 | 43,6% | 2011 | 41,5% | 2020 | 42,1% |
| 2003 | 45,6% | 2012 | 41,7% | 2021 | 39,5% |
| 2004 | 42% | 2013 | 40,1% | 2022 | 38,4% |
| 2005 | 42,5% | 2014 | 39,6% | 2023 | 35,8% |
| 2006 | 42,5% | 2015 | 37,8% | 2024 | 37,4% |
| 2007 | 41,2% | 2016 | 35,5% | 2025 | 37% |
| 2008 | 42,1% | 2017 | 32,7% | 2026 | 35,9% |
Tabella dei dati
| 2000 | 1,77 mld | 2009 | 2,59 mld | 2018 | 4,72 mld |
| 2001 | 1,9 mld | 2010 | 2,75 mld | 2019 | 5,09 mld |
| 2002 | 1,96 mld | 2011 | 2,92 mld | 2020 | 6,04 mld |
| 2003 | 2,17 mld | 2012 | 3,12 mld | 2021 | 6,58 mld |
| 2004 | 2,06 mld | 2013 | 3,26 mld | 2022 | 6,9 mld |
| 2005 | 2,19 mld | 2014 | 3,54 mld | 2023 | 7,49 mld |
| 2006 | 2,29 mld | 2015 | 3,87 mld | 2024 | 8,65 mld |
| 2007 | 2,38 mld | 2016 | 3,85 mld | 2025 | 9,08 mld |
| 2008 | 2,63 mld | 2017 | 4,1 mld | 2026 | 9,36 mld |