2015

3.0

2016

4.7

2015

5.5

2019

7.6

2007

8.0

1989

5.5

2016

6.0

2004

7.5

1997

4.5

1995

6.3

1988

6.9

1960

4.6

1965

0.0

1974

5.7

2009

6.6

2009

4.7

2007

7.2

2009

7.2

2007

5.0