1927

8.1

1979

8.3

2005

6.5

1982

7.9

2006

6.2

1959

7.8

0.0

1930

7.7

2000

7.4

2015

5.6

1999

8.4

1972

7.1

1988

7.8

1997

7.1

2001

7.4

1995

6.6

1975

7.7

1990

7.8

2002

7.3

2006

6.7