2011 7.4

2006 7.0

2008 6.8

2012 7.3

2018 6.1

2017 7.4

2002 7.2

2010 7.0

2020 3.3

2008 6.1

2017 6.5

2002 7.5

2017 6.6

2008 6.4

1991 6.8

2018 7.5

1986 8.0

2016 5.7

1994 7.3

2016 6.7