Tableau de données
| 2000 | 1,01 Md | 2009 | 2,06 Md | 2018 | 1,66 Md |
| 2001 | 1,06 Md | 2010 | 1,88 Md | 2019 | 1,62 Md |
| 2002 | 1,15 Md | 2011 | 1,81 Md | 2020 | 1,54 Md |
| 2003 | 1,46 Md | 2012 | 1,61 Md | 2021 | 1,86 Md |
| 2004 | 1,71 Md | 2013 | 1,68 Md | 2022 | 1,83 Md |
| 2005 | 1,79 Md | 2014 | 1,67 Md | 2023 | 2,03 Md |
| 2006 | 1,91 Md | 2015 | 1,42 Md | 2024 | 2,09 Md |
| 2007 | 2,19 Md | 2016 | 1,47 Md | 2025 | 2,25 Md |
| 2008 | 2,4 Md | 2017 | 1,53 Md | 2026 | 2,42 Md |
Tableau de données
| 1997 | 859 M | 2007 | 1,6 Md | 2017 | 1,35 Md |
| 1998 | 940 M | 2008 | 1,63 Md | 2018 | 1,4 Md |
| 1999 | 1,04 Md | 2009 | 1,48 Md | 2019 | 1,44 Md |
| 2000 | 1,09 Md | 2010 | 1,42 Md | 2020 | 1,35 Md |
| 2001 | 1,18 Md | 2011 | 1,3 Md | 2021 | 1,57 Md |
| 2002 | 1,22 Md | 2012 | 1,25 Md | 2022 | 1,74 Md |
| 2003 | 1,29 Md | 2013 | 1,26 Md | 2023 | 1,88 Md |
| 2004 | 1,38 Md | 2014 | 1,26 Md | 2024 | 1,93 Md |
| 2005 | 1,44 Md | 2015 | 1,28 Md | 2025 | 1,99 Md |
| 2006 | 1,52 Md | 2016 | 1,33 Md | 2026 | 2,05 Md |
Tableau de données
| 1997 | 1,02 Md | 2007 | 1,6 Md | 2017 | 1,19 Md |
| 1998 | 1,09 Md | 2008 | 1,59 Md | 2018 | 1,2 Md |
| 1999 | 1,19 Md | 2009 | 1,43 Md | 2019 | 1,23 Md |
| 2000 | 1,22 Md | 2010 | 1,35 Md | 2020 | 1,14 Md |
| 2001 | 1,29 Md | 2011 | 1,23 Md | 2021 | 1,31 Md |
| 2002 | 1,29 Md | 2012 | 1,14 Md | 2022 | 1,41 Md |
| 2003 | 1,34 Md | 2013 | 1,13 Md | 2023 | 1,42 Md |
| 2004 | 1,4 Md | 2014 | 1,13 Md | 2024 | 1,43 Md |
| 2005 | 1,44 Md | 2015 | 1,16 Md | 2025 | 1,45 Md |
| 2006 | 1,49 Md | 2016 | 1,18 Md | 2026 | 1,47 Md |