2007

10.0

2004

6.1

1948

7.0

2006

5.5

1996

7.4

1939

7.8

2012

9.7

2011

7.3

2015

7.5

1990

6.4

1977

6.5

1965

7.5

1968

6.0

1986

7.4

2005

4.7

1922

6.6

1974

6.6

1999

4.3

1987

6.9

1952

6.7