2020

5.9

1994

5.5

1996

6.4

1967

6.6

2009

6.5

2008

7.7

2007

7.4

2010

7.0

2009

6.6

1988

7.5

2004

6.2

1968

7.5

2001

5.3

1965

6.7

2014

6.2

2014

5.4

2014

6.9

1985

6.6

2014

6.3

2009

6.7