2000

6.6

2002

5.8

2005

5.6

1993

5.2

2015

5.0

1995

4.8

1986

6.2

2004

7.8

1990

5.0

1983

5.2

1989

3.9

1987

5.0

1983

7.5

1996

6.0

1984

5.8

1993

5.2

1979

6.6

1983

6.6

1987

5.8