2006

5.9

2005

6.7

1981

6.9

2018

1.0

1993

0.0

1991

9.0

1969

7.1

1997

7.7

1968

7.3

1970

7.1

1958

7.8

2016

5.0

2013

4.0

1967

7.3

1983

6.6

2002

6.1

1999

4.4

1970

6.3

1976

4.7

1979

6.0