1978

5.8

2017

4.0

2003

5.4

1999

6.5

1984

6.8

1970

6.6

1991

4.0

1972

0.0

2014

6.4

1941

5.0

1939

7.0

1961

7.0

2014

6.8

2001

6.9

1956

6.1

1991

5.7

1985

6.2

1998

5.5

1998

7.0

2000

0.0