1982

7.5

1996

6.9

1997

7.2

0.0

2013

3.2

2002

6.4

1982

8.1

1998

5.5

2007

6.8

2004

7.0

2000

6.0

2017

3.9

1995

5.3

1993

6.1

2005

6.4

2003

5.4

2011

0.0

1959

5.6

2008

6.7

2000

4.3