1988

5.2

2008

6.7

1969

6.7

1989

5.1

1963

7.4

1983

6.9

1985

7.2

2013

7.5

2008

6.8

2000

5.2

1957

8.0

1998

7.9

1960

6.3

1933

5.5

1966

7.3

2011

7.1

1971

7.7

1990

6.4

1944

6.0

1934

7.5