2005

6.1

1976

6.8

2008

6.5

2005

4.0

1979

7.3

1998

6.5

2000

7.0

2007

0.0

1990

6.8

2000

6.5

2014

3.7

1969

6.3

2019

5.0

2010

5.7

2012

5.5

2014

4.7

1963

7.2

1971

3.9

2007

0.0

1998

5.0