1998

2.7

2001

7.7

2004

7.3

1997

6.1

1953

6.3

1997

4.8

1982

6.7

1953

7.0

1984

6.9

1998

7.4

2001

6.5

1984

5.9

1971

0.0

1976

0.0

1992

5.7

1984

6.3

1991

0.0

1977

0.0

2016

6.5

2016

4.5