2004 8.3

1987 7.8

2006 7.9

2018 7.5

2012 7.8

2019 6.5

2013 6.5

2021 7.3

1999 7.5

2015 6.9

2019 7.9

2014 7.7

2012 7.0

2001 7.7

2009 7.9

2020 6.5

2014 7.8

2019 7.6

1994 7.3

1996 7.4