1973

6.8

1952

6.2

1937

6.1

1943

5.7

1996

5.7

2006

3.7

2005

7.0

1975

6.4

1999

0.0

1959

5.9

1956

6.9

2009

5.3

1971

7.0

1976

4.3

1976

6.7

1998

5.6

1949

5.5

2002

5.3

2010

5.3

1972

7.1