1994

8.0

1991

7.1

1988

6.7

1982

5.2

1994

5.8

2003

6.1

2007

4.7

1963

0.0

1976

7.2

2015

6.4

2004

5.8

1989

3.2

1994

7.1

1986

6.4

2002

6.4

1979

6.3

1981

6.1

1982

6.1

1987

5.7

1970

6.6