1984

0.0

1993

0.0

2006

1.0

2010

3.8

1986

2.3

2017

7.0

2014

6.8

1985

7.2

2002

6.1

2001

6.9

1977

7.4

1991

6.0

2001

6.8

2007

6.9

2006

5.1

1933

0.0

1964

5.5

1966

4.0

1996

6.7

2017

0.0