1993

5.1

1990

7.3

2013

8.2

2005

5.9

1989

6.7

2005

8.2

1979

6.7

1986

7.1

2005

7.5

1995

7.8

1996

7.0

1988

7.4

1985

7.1

1999

0.0

1992

0.0

1993

8.4