0.0

2007

0.0

2008

0.0

2006

4.0

1998

5.8

1953

5.4

1986

7.2

1984

5.6

1972

7.8

1980

5.6

2006

6.1

1973

6.5

1982

5.0

1972

6.0

2005

5.6

1989

5.9

1996

6.3