1953

7.8

2007

6.3

1958

7.5

2000

6.1

1973

7.3

2008

5.9

1971

7.5

2003

6.3

1971

6.8

2005

7.0

2017

6.6

2013

8.0

2020

6.5

2010

4.9

2009

5.7

1977

6.9

2020

0.0

2010

6.5

1988

3.9

1989

8.4