1969

6.8

1974

5.5

2002

6.8

1977

1.0

1979

6.4

1962

7.9

1985

2.0

2010

7.6

2002

0.0

2008

5.6

2014

6.0

1994

6.0

2012

5.5

1967

6.1

1983

4.3

1981

3.0

1968

4.8

1990

2.0

2023

6.5

2015

6.6