1999

4.5

1964

7.2

1974

7.9

1996

6.6

2014

6.2

1939

7.5

1953

6.9

1980

7.3

1942

6.6

2013

4.6

1928

0.0

1998

7.4

1982

7.0

2004

7.3

2001

6.9

1969

6.0

2006

6.1

2003

5.5

1990

5.8

1941

5.5