1991

5.8

1978

7.2

1968

6.4

2001

6.3

1986

0.0

1970

5.6

1969

7.4

1982

6.6

2014

7.0

1988

7.8

1988

7.2

1995

8.2

1967

7.5

1992

8.1

1998

6.7

2014

5.5

2001

7.5

2004

6.6

1997

7.4

1956

7.7