Tabella dei dati
| 2001 | 15,8% | 2010 | 35% | 2019 | 35,4% |
| 2002 | 15,3% | 2011 | 36,5% | 2020 | 46,4% |
| 2003 | 15,2% | 2012 | 41,5% | 2021 | 48,6% |
| 2004 | 15,1% | 2013 | 42,5% | 2022 | 38,9% |
| 2005 | 14,8% | 2014 | 42% | 2023 | 35,4% |
| 2006 | 17,2% | 2015 | 41% | 2024 | 32,9% |
| 2007 | 20,9% | 2016 | 39,8% | 2025 | 30,3% |
| 2008 | 27,7% | 2017 | 37,9% | 2026 | 28% |
| 2009 | 33,5% | 2018 | 36,3% | | |
Tabella dei dati
| 2001 | 273 mln | 2010 | 911 mln | 2019 | 997 mln |
| 2002 | 285 mln | 2011 | 951 mln | 2020 | 1,17 mld |
| 2003 | 317 mln | 2012 | 1,03 mld | 2021 | 1,37 mld |
| 2004 | 352 mln | 2013 | 1,02 mld | 2022 | 1,25 mld |
| 2005 | 375 mln | 2014 | 1,04 mld | 2023 | 1,24 mld |
| 2006 | 473 mln | 2015 | 1,03 mld | 2024 | 1,23 mld |
| 2007 | 603 mln | 2016 | 1,04 mld | 2025 | 1,21 mld |
| 2008 | 774 mln | 2017 | 1,01 mld | 2026 | 1,17 mld |
| 2009 | 886 mln | 2018 | 990 mln | | |