1988

4.9

2019

7.0

1977

5.4

1985

6.9

2003

6.6

1972

7.3

2008

5.5

1983

6.2

2003

5.0

2013

5.6

1978

0.0

1966

7.7

2005

7.7

1984

7.2

1998

6.5

1992

4.5

2003

7.2

1954

8.5

1970

7.0

1989

6.8