1980

7.8

1998

7.3

2016

3.5

1956

5.8

1970

7.2

1935

6.0

2002

5.8

2017

4.6

2004

5.1

2017

6.7

1997

4.6

1991

8.2

1964

7.0

1948

6.7

1978

5.8

2009

4.0

1994

5.4

0.0

1999

5.4

1942

6.0