1987

8.1

2005

6.7

1989

5.6

2014

6.2

2002

6.4

1964

7.3

1950

6.4

2008

5.1

1991

6.9

1943

5.2

2014

5.0

1953

5.2

1940

5.5

1944

7.0

1957

6.9

1928

6.7

1960

6.6

2007

7.1

2012

7.4

1946

6.2