2007

6.9

2004

5.3

2008

5.0

1980

2.0

1968

6.0

1972

3.5

2017

0.0

1969

3.6

2004

5.6

1999

8.0

1990

6.7

1994

5.5

2016

5.0

1995

6.7

2008

5.6

1974

6.0

2014

4.9

2007

4.0

2017

5.9

1997

1.0