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