2008

5.7

2003

5.4

1997

4.5

1987

6.4

1981

7.0

2001

5.1

1976

7.2

2019

0.0

1960

7.5

1993

7.0

1981

6.8

2016

5.4

2014

5.9

1998

7.3

1962

7.2

1995

4.8

1988

6.3

2007

7.5

1998

6.5

2018

6.1