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| 1998 | 208,6% | 2008 | 59,8% | 2018 | 39,9% |
| 1999 | 150,7% | 2009 | 56,4% | 2019 | 37,6% |
| 2000 | 164,5% | 2010 | 54,4% | 2020 | 49,1% |
| 2001 | 262% | 2011 | 49,9% | 2021 | 63,4% |
| 2002 | 190,6% | 2012 | 48% | 2022 | 56% |
| 2003 | 146% | 2013 | 44,8% | 2023 | 53,2% |
| 2004 | 126,6% | 2014 | 34,5% | 2024 | 50,6% |
| 2005 | 119% | 2015 | 36,6% | 2025 | 51,9% |
| 2006 | 103,1% | 2016 | 35,7% | 2026 | 51,9% |
| 2007 | 77,4% | 2017 | 41,9% | | |
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| 1998 | 3,24 bill. | 2008 | 17,29 bill. | 2018 | 40,02 bill. |
| 1999 | 3,26 bill. | 2009 | 18,55 bill. | 2019 | 42,35 bill. |
| 2000 | 4,44 bill. | 2010 | 20,06 bill. | 2020 | 51,56 bill. |
| 2001 | 9,1 bill. | 2011 | 21,15 bill. | 2021 | 60,34 bill. |
| 2002 | 9,95 bill. | 2012 | 23,43 bill. | 2022 | 70,35 bill. |
| 2003 | 11,09 bill. | 2013 | 25,49 bill. | 2023 | 74,62 bill. |
| 2004 | 12,1 bill. | 2014 | 22,5 bill. | 2024 | 81,63 bill. |
| 2005 | 14,46 bill. | 2015 | 26,62 bill. | 2025 | 89,82 bill. |
| 2006 | 17,1 bill. | 2016 | 28,45 bill. | 2026 | 100,84 bill. |
| 2007 | 17,69 bill. | 2017 | 37,5 bill. | | |