1968

7.1

1974

0.0

1964

7.9

2007

6.6

1965

6.2

2006

5.6

1955

6.6

1971

5.8

1957

6.9

2009

7.9

1936

6.5

1978

6.1

1963

7.2

1973

6.0

1967

6.8