1977

5.2

1977

4.6

1983

6.0

1978

6.1

1972

5.0

2004

5.0

1970

4.0

2002

3.8

2005

5.6

1971

3.5

1982

5.3

1968

3.0

1999

3.7

1969

7.2

1966

6.0

1970

3.5

1970

3.0

1979

5.3

1999

4.0

1997

4.0