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| 1997 | 51,5% | 2007 | 8% | 2017 | 14,3% |
| 1998 | 135,2% | 2008 | 7,4% | 2018 | 13,6% |
| 1999 | 92,4% | 2009 | 9,9% | 2019 | 13,7% |
| 2000 | 55,9% | 2010 | 10,1% | 2020 | 19,2% |
| 2001 | 44,4% | 2011 | 10,3% | 2021 | 16,5% |
| 2002 | 37,6% | 2012 | 11,2% | 2022 | 15,1% |
| 2003 | 28,3% | 2013 | 12,3% | 2023 | 15,2% |
| 2004 | 20,8% | 2014 | 15,1% | 2024 | 14,8% |
| 2005 | 14,9% | 2015 | 15,3% | 2025 | 17,2% |
| 2006 | 9,8% | 2016 | 14,8% | 2026 | 19,1% |
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| 1997 | 1,29 bill. | 2007 | 2,86 bill. | 2017 | 13,14 bill. |
| 1998 | 3,81 bill. | 2008 | 3,29 bill. | 2018 | 14,15 bill. |
| 1999 | 4,77 bill. | 2009 | 4,12 bill. | 2019 | 15,07 bill. |
| 2000 | 4,37 bill. | 2010 | 5,01 bill. | 2020 | 20,63 bill. |
| 2001 | 4,26 bill. | 2011 | 6,22 bill. | 2021 | 22,27 bill. |
| 2002 | 4,36 bill. | 2012 | 7,61 bill. | 2022 | 23,76 bill. |
| 2003 | 4,01 bill. | 2013 | 9,01 bill. | 2023 | 26,47 bill. |
| 2004 | 3,8 bill. | 2014 | 11,96 bill. | 2024 | 29,86 bill. |
| 2005 | 3,44 bill. | 2015 | 12,7 bill. | 2025 | 36,7 bill. |
| 2006 | 2,83 bill. | 2016 | 12,71 bill. | 2026 | 42,51 bill. |