2000

7.2

2020

10.0

2012

8.3

2001

6.5

1986

7.0

1998

7.4

2003

0.0

1974

0.0

2005

7.5

1990

7.1

2006

8.1

1973

8.2

0.0

2003

8.2

2006

7.4

2006

5.0

2006

0.0

2008

0.0

2008

8.8

0.0