1988

4.7

1985

5.1

1986

6.1

1990

8.1

2018

7.9

1997

7.5

1979

6.6

1978

7.4

1976

0.0

1978

6.0

1984

6.7

2016

8.2

2014

8.4

1977

0.0

1968

9.5

2021

6.4

1979

4.2

1985

6.6

2017

6.6

1987

0.0

1973

5.0