1952

0.0

1955

6.3

2008

4.7

1953

7.0

1987

3.5

1972

0.0

1997

6.9

2007

6.8

2004

6.4

2002

7.1

1985

6.2

2007

6.7

1982

4.9

1933

6.9

1933

7.3

2014

4.8

1963

4.0

1994

7.3

1951

7.0

1999

6.7