1967

6.6

1923

7.5

1964

7.1

1998

6.9

1979

6.1

2020

6.8

2003

7.2

1949

5.0

1988

6.6

1995

6.5

2002

5.7

1948

4.2

1967

6.8

1982

6.9

2006

4.3

1937

6.2

1947

6.0

1937

6.0

2010

6.3

1926

0.0