2000: | 5.6 | 2008: | 7.2 | 2016: | 6.1 | ||
2001: | 7 | 2009: | 7.8 | 2017: | 5 | ||
2002: | 6.1 | 2010: | 6.9 | 2018: | 4 | ||
2003: | 8.4 | 2011: | 7.4 | 2019: | 3 | ||
2004: | 7.1 | 2012: | 7.9 | 2020: | 3 | ||
2005: | 6.9 | 2013: | 8.2 | 2021: | 3 | ||
2006: | 6.8 | 2014: | 6.8 | ||||
2007: | 6.9 | 2015: | 6.3 |