2002

6.2

1996

7.2

2002

6.7

2008

6.0

1993

6.8

1985

7.1

1997

6.6

1995

6.2

1984

6.4

2012

0.0

1997

6.8

1940

7.9

1956

7.5

1997

6.6

1991

8.3

1946

7.7

1954

7.9

1964

7.1

1955

7.3

2017

5.9