1974

5.1

2010

7.3

1981

7.3

1963

7.9

1986

7.1

1984

6.3

1970

7.2

1989

7.2

1991

5.3

1993

5.8

1987

6.8

1949

8.0

1994

4.8

1984

8.4

1967

7.2

1959

4.2

2004

6.8

1993

6.5

1978

6.4

1970

7.1