2005

6.1

2008

6.5

1976

6.8

1969

6.3

1979

7.3

2019

5.0

2014

3.7

2007

0.0

2000

6.5

1998

6.5

2000

7.0

2007

0.0

1990

6.8

2005

4.0

2018

6.4

2012

5.5

2009

5.0

2010

5.7

1972

8.0

1971

2.8