1990

6.4

1993

5.4

2002

4.3

2005

8.2

2002

6.3

1986

7.9

1991

5.7

2002

6.5

2008

5.7

1998

0.0

1995

7.9

1990

7.4

1989

0.0

2000

7.1

1984

6.6

2016

8.2

1997

1.0