1985

7.5

1989

6.2

2006

5.0

1996

9.0

2008

5.4

2002

6.1

1959

0.0

1992

0.0

1986

8.8

2016

6.4

2014

6.2

1983

8.5

1996

7.0

1988

3.0

2004

6.7

2001

7.2

1990

5.2