2015

5.0

2014

6.5

1977

6.4

1986

4.5

2005

5.4

2009

4.7

2002

6.9

2007

6.1

1988

6.2

2006

5.0

1985

7.2

1984

6.7

2007

4.7

1998

6.0

1956

7.9

1965

6.8

2006

7.3

2023

6.8