1999

4.7

2015

8.7

2000

5.8

1990

7.0

1994

7.8

1998

6.5

2009

6.7

2015

6.3

1985

6.3

1986

5.3

1982

7.5

1986

8.3

1978

0.0

1995

4.9

2005

7.7

1992

4.5

1986

6.6

2001

8.0

2009

8.0

2003

7.1

1996

6.0

2020

6.7

1990

6.8