1988

6.8

1976

5.5

1984

5.8

2001

7.6

1993

5.7

1999

6.6

1998

6.8

1980

6.3

1989

5.9

1996

6.6

1990

6.7

1981

6.9

1979

5.0

1978

5.6

1974

7.2

1975

5.3

1989

4.6

1979

6.7

2019

6.0

1981

7.1