2007

6.9

1989

6.9

1991

6.3

1967

7.6

1999

0.0

2005

7.0

1993

5.4

2008

6.6

1986

0.0

2014

4.8

1975

7.5

1996

2.7

1932

7.3

2001

7.7

1997

6.6

1999

6.3

2002

6.0

1988

7.0

2001

5.8

1968

7.7