2013

5.6

1972

6.9

2001

5.9

2003

5.7

1988

7.3

1976

4.0

1977

4.0

1972

6.7

1975

6.7

2020

0.0

2005

5.0

2006

5.2

1988

6.3

2005

6.2

1998

4.1

1995

7.3

1974

7.1

1980

7.8

1992

6.0

1994

7.4