1992

6.9

2016

7.7

2010

7.8

1982

7.6

2006

5.8

1995

4.6

2012

7.6

1994

7.8

2004

6.5

1988

7.7

1990

7.4

2001

7.6

2015

8.2

2005

5.5

1993

0.0

1993

7.9

1993

4.4

2006

5.8

2017

7.0

1990

6.9