1966

8.1

1985

7.7

1998

6.7

1972

3.0

1969

5.5

2003

6.4

2008

6.1

1975

7.2

1978

6.2

1971

5.1

1974

0.0

1990

5.0

2015

7.6

2010

6.7

2008

6.1

1963

8.0

2007

6.1

1975

7.0

1954

4.3

1984

6.0