2013

5.8

2003

6.8

1996

5.7

1999

8.0

2010

6.4

1991

7.3

6.0

2007

3.6

2018

5.8

2018

4.9

2007

4.6

2010

8.4

2014

9.0

1997

5.9

2003

0.0

1992

5.5

1976

5.8

1991

3.6

2007

6.5

2008

6.2

1995

6.9

1994

5.3

2015

7.0