1972

5.2

1975

7.1

1974

0.0

1965

7.2

1987

6.6

1957

6.7

1948

4.7

1985

6.7

2003

7.0

1993

6.9

2000

7.7

1980

5.0

1999

5.5

1978

7.2

2016

4.8

1951

5.7

1984

5.7

2005

4.3

1937

7.0

2004

6.0