2004

7.5

1993

7.5

2000

6.8

2013

4.6

1972

6.6

2006

6.5

1990

6.4

1990

6.7

1988

6.2

1972

7.4

1976

6.6

2001

6.8

1932

6.3

1932

4.5

2008

7.6

2008

6.9

2008

6.8

1931

0.0

2006

6.1

1970

7.7