| Year | Percentage (%) to GDP |
| 2000 | 9 |
| 2001 | 9 |
| 2002 | 9 |
| 2003 | 8.9 |
| 2004 | 8.7 |
| 2005 | 8.6 |
| 2006 | 9.7 |
| 2007 | 8.5 |
| 2008 | 7.5 |
| 2009 | 6.7 |
| 2010 | 6.3 |
| 2011 | 6.4 |
| 2012 | 5.6 |
| 2013 | 13.5 |
| 2014 | 11 |
| 2015 | 11 |
| 2016 | 10 |
| 2017 | 10 |
| 2018 | 10 |
| 2019 | 10 |
| 2020 | 10.9 |
| 2021 | 10.7 |