1972

7.1

1950

8.3

1960

8.2

2006

5.9

1972

6.3

1999

6.2

1981

7.6

2008

5.5

2008

6.6

2011

0.0

1983

6.4

1987

6.9

1999

5.9

2008

6.8

2006

7.2

1938

7.3

1986

6.0

1947

6.1

2005

5.2

2022

6.5