1970

6.4

2022

7.1

1992

6.8

1974

6.5

2005

7.4

2002

6.0

2011

6.5

1986

6.9

1941

7.0

2008

6.6

1979

6.2

2006

5.0

2004

7.0

2004

5.9

1979

7.3

1952

7.7

1997

5.1

2005

5.1

1977

5.8

2015

6.4