1968

6.0

1992

7.4

1944

7.6

2007

5.6

2006

7.4

1986

7.3

1990

6.7

2008

6.3

1998

7.1

2007

6.6

1980

7.9

1946

8.3

1993

7.9

1962

7.7

2000

6.1

1954

7.6

1955

6.0

1972

0.0

1918

0.0

1989

6.6