1966

6.7

5.0

1993

6.1

1977

5.9

2011

6.5

1999

8.0

2008

7.1

1994

6.8

2021

6.2

1975

4.5

1982

7.7

1989

6.4

1931

5.8

1940

8.3

1981

7.3

2004

6.6

2011

6.2

2004

7.8

2012

6.3

6.4