1976

4.6

1973

6.6

1973

5.8

1974

6.2

1974

6.5

1958

7.0

2001

6.3

2005

5.5

1979

6.7

2019

6.6

1973

5.3

1973

6.5

1973

3.1

2001

6.3

2006

5.6

2020

5.6

1988

6.7

2004

5.5

1997

6.6

1988

6.4