2009 6.7

2010 6.8

1997 7.3

1987 7.8

2008 7.1

2012 7.2

1999 7.4

1984 7.5

1973 8.1

1987 8.2

2016 7.2

2001 8.2

1951 7.3

2015 5.6

2021 6.3

2019 6.9

2021 7.4

1994 7.0

2004 7.7

2000 6.7