1969

3.5

2017

4.0

1976

0.0

1964

6.5

2006

5.8

1998

3.7

1982

7.4

1984

6.6

1990

7.7

1989

7.8

1986

7.2

1989

5.7

1954

7.1

1991

7.0

1988

7.4

1989

6.1

1994

6.5

1990

7.5

1996

7.3

1998

6.4