1973

7.1

2002

6.3

2005

6.9

1965

8.1

1963

7.9

1924

7.8

2010

6.6

1941

4.0

2009

6.7

1943

4.8

2013

6.9

1974

6.8

2017

6.7

2001

4.4

1992

4.9

1997

5.3

1942

4.3

2010

7.1

1992

6.4

1998

5.9