1955

7.5

1950

8.1

1995

6.3

1957

7.2

1990

6.9

1968

5.7

1998

6.3

1963

6.3

1960

4.7

1951

5.2

1933

6.2

1967

6.8

2015

5.8

1955

7.3

2004

3.8

1954

8.1

1947

6.2

1988

5.8

2002

6.1

2004

5.9