1964

6.6

2006

5.1

2014

2.9

1995

7.6

2016

3.4

2020

6.9

2020

6.4

2008

4.8

2018

6.5

2004

7.3

2002

7.2

1994

6.2

1963

7.1

1962

7.9

1967

6.6

2003

8.3

1977

6.8

1997

7.0

2011

0.0

2017

7.6