1978

6.3

1993

6.1

1996

5.8

1999

0.0

1982

6.0

1986

8.0

1996

7.3

1996

4.5

1994

5.5

2006

5.8

1989

6.9

1987

5.0

2003

6.8

1987

7.1

1981

0.0

1984

3.6

2013

4.2

1989

6.1