2011 6.4

2009 6.8

2015 6.8

1997 8.2

1993 8.2

1997 7.3

2006 6.7

2013 8.1

2015 7.1

1997 7.3

2017 7.3

2001 7.7

2015 6.8

2021 7.3

2007 6.8

2004 7.6

1993 7.1

2016 7.1

2018 5.4

2018 6.3