1999

4.7

2015

8.7

2000

5.8

1990

6.9

1994

7.8

1998

6.5

2009

6.7

2015

6.3

1985

6.3

1986

5.3

1982

7.6

1986

8.3

1978

0.0

2004

6.6

1995

5.4

2005

7.7

1992

4.5

1986

6.6

2001

8.0

1989

5.0

2009

7.9

2003

7.2

1996

6.0

2020

6.7

2007

6.3

1990

6.9