1952

6.4

1976

6.4

1946

6.6

1959

4.3

1928

0.0

2018

6.7

1978

7.2

1974

6.7

1994

5.9

2017

5.8

2001

6.2

2009

6.4

1973

6.2

1970

5.8

1970

5.2

1994

6.0

2014

5.0

1978

6.2

1981

6.3

1996

6.0