1995 7.7

2002 7.4

2004 7.6

2015 7.7

2017 7.5

2020 6.7

2015 6.4

1995 6.8

2014 6.5

2001 8.0

2009 6.9

1954 8.4

1997 7.3

1984 7.8

2014 6.2

2009 7.4

2011 6.4

2009 6.8

2015 6.8

1997 8.2