1967

7.3

1979

6.9

2007

6.2

1971

6.4

1995

7.7

1977

6.8

1979

7.7

1974

6.6

1993

7.4

1968

7.1

1990

8.5

1947

5.4

2012

9.1

2022

4.1

1960

8.4

1998

6.9

2002

7.0

2005

7.8

1947

6.5

2005

6.3