1989

4.4

1971

6.1

1995

5.2

2018

0.0

2006

4.8

2003

6.2

1996

5.6

2016

8.0

1958

7.3

1987

6.9

2003

6.4

2018

5.7

2003

5.7

2007

6.7

2007

6.2

1932

5.5

2008

5.4

2014

6.0

2006

3.5

2011

6.5