1993

4.0

1972

2.4

2015

4.6

2013

7.0

1975

5.3

1971

3.5

1982

5.3

1968

3.0

1999

3.7

1969

7.2

1966

6.0

1970

3.5

1970

3.0

2008

4.0

1972

3.2

1980

5.1

1999

3.4

1995

4.4

2001

4.4

1979

6.0