1976

7.0

2020

5.5

1968

5.9

1986

0.0

2000

4.2

1988

0.0

1970

5.4

1968

5.4

2017

4.7

1984

5.8

1973

7.2

2000

7.3

1966

6.0

1969

6.3

1988

6.3

1989

7.1

1991

0.0

2004

4.2

1997

4.6