1929

0.0

1993

7.0

1995

7.2

1994

7.9

1973

6.5

1958

6.5

1972

5.0

1964

5.7

1939

5.8

1971

6.3

1997

7.0

1958

6.5

2017

6.6

1952

7.6

1965

10.0

1981

7.6

1988

6.9

2004

6.4

2005

6.1

1963

7.7