1987

7.7

1992

7.7

2003

7.4

1986

6.1

1969

5.4

2019

8.0

2014

6.0

2012

7.9

1991

4.2

1992

6.7

2012

8.4

1962

7.1

2005

7.3

1966

6.1

2006

7.8

1974

0.0

1979

0.0

1977

0.0

1967

0.0

1994

8.3