Tabella dei dati
| 1990 | 54,1% | 2003 | 94,9% | 2016 | 76,9% |
| 1991 | 56,9% | 2004 | 86,2% | 2017 | 84,2% |
| 1992 | 54% | 2005 | 82% | 2018 | 85,7% |
| 1993 | 53,4% | 2006 | 77,4% | 2019 | 97,8% |
| 1994 | 55,9% | 2007 | 71,8% | 2020 | 118,4% |
| 1995 | 57,4% | 2008 | 64,4% | 2021 | 116,3% |
| 1996 | 53,7% | 2009 | 62,5% | 2022 | 110% |
| 1997 | 47,7% | 2010 | 66,8% | 2023 | 101,3% |
| 1998 | 56,3% | 2011 | 69,7% | 2024 | 108,2% |
| 1999 | 61,8% | 2012 | 73,1% | 2025 | 102,6% |
| 2000 | 68,9% | 2013 | 73,9% | 2026 | 98,3% |
| 2001 | 98,5% | 2014 | 71,3% | | |
| 2002 | 97,9% | 2015 | 68,2% | | |
Tabella dei dati
| 1990 | 308 mln | 2003 | 910 mln | 2016 | 1,14 mld |
| 1991 | 348 mln | 2004 | 851 mln | 2017 | 1,22 mld |
| 1992 | 349 mln | 2005 | 835 mln | 2018 | 1,35 mld |
| 1993 | 367 mln | 2006 | 848 mln | 2019 | 1,47 mld |
| 1994 | 407 mln | 2007 | 852 mln | 2020 | 1,69 mld |
| 1995 | 439 mln | 2008 | 823 mln | 2021 | 1,82 mld |
| 1996 | 431 mln | 2009 | 829 mln | 2022 | 1,88 mld |
| 1997 | 403 mln | 2010 | 898 mln | 2023 | 1,84 mld |
| 1998 | 497 mln | 2011 | 928 mln | 2024 | 2,09 mld |
| 1999 | 555 mln | 2012 | 971 mln | 2025 | 2,13 mld |
| 2000 | 626 mln | 2013 | 1,02 mld | 2026 | 2,15 mld |
| 2001 | 896 mln | 2014 | 1,02 mld | | |
| 2002 | 894 mln | 2015 | 1,03 mld | | |