1994

6.8

2006

5.8

1986

0.0

1988

0.0

2001

6.5

1990

0.0

1937

6.0

1934

6.3

1970

0.0

2007

6.7

2018

5.0

1991

8.2

1995

9.0

1992

0.0

1992

0.0

1990

0.0

1959

6.9

2000

6.4

1981

7.1

2019

5.9