1989

5.2

2014

4.9

1953

4.6

2002

8.4

1998

8.1

1979

6.2

1946

7.7

1984

5.8

2009

7.1

1974

10.0

1990

4.4

1933

6.3

2001

5.7

1947

6.8

2016

4.0

1939

5.1

2002

7.4

1985

6.7

1984

2.0

2008

4.3