1969

6.6

1981

5.4

2003

6.1

2008

0.0

2006

6.4

2004

6.8

2006

4.7

2000

6.3

2020

9.0

1976

3.6

1975

5.9

2015

5.7

1959

4.3

1928

7.9

2004

4.7

2009

5.7

2006

4.6

1965

5.6

2008

5.2

1941

7.0