2000

7.8

1981

8.1

2021

7.2

1977

6.0

1984

6.9

2002

6.5

1984

5.3

1991

5.7

1964

0.0

1997

0.0

1997

0.0

1971

6.4

1999

5.5

1970

6.1

1978

5.5

2006

6.4

1983

6.0