2006

7.0

1998

6.3

1998

6.3

1995

5.7

2006

6.0

2001

6.1

2017

5.6

1990

6.3

1996

5.9

1991

6.6

2002

7.8

1988

4.9

1949

6.9

1949

7.7

1983

4.0

1937

5.6

1941

5.9

1941

7.8

1935

6.2

1993

0.0