2004

9.5

2016

7.6

1997

8.1

2010

0.0

2011

0.0

2008

7.5

1993

7.2

2018

0.0

2009

6.0

1988

5.6

1999

7.7

1984

7.6

2014

4.0

2013

3.1

2011

6.9

1975

6.9

2013

8.4

2019

8.2

2018

7.6

1998

7.8

1953

7.0

2008

0.0

1992

5.4

1999

8.3

2007

7.4