1968

6.4

2005

4.3

1972

6.8

1993

7.6

2007

6.9

1969

5.8

2006

5.5

2003

6.8

1994

6.1

1968

7.5

2021

6.6

1966

7.2

2007

3.1

2004

3.7

1990

6.5

1953

5.0

1979

6.1

1979

0.0

1974

7.2

1971

7.4