2001

7.3

2013

8.5

1988

6.3

2002

6.8

2005

5.3

2003

5.9

1964

7.1

2016

3.3

1996

6.4

1970

7.2

2005

4.0

1994

7.5

1980

6.6

2010

3.9

2014

6.7

2003

5.4

2007

5.0

1998

0.0

2007

3.3

1996

5.3