2013

5.6

2003

6.7

2001

5.9

2003

5.7

1988

7.3

2014

0.8

1976

4.0

1977

4.0

1965

6.0

1972

6.7

1975

6.7

2000

5.9

1999

6.1

2005

5.0

2004

3.9

2006

5.2

1991

6.6

1988

6.3

1987

6.6

1997

6.6