2014

4.9

1998

7.1

2018

5.4

2006

6.0

2011

3.8

2005

4.4

2007

6.5

1974

4.5

1978

4.8

2004

5.3

1996

1.6

2014

6.1

2000

6.1

2014

4.5

2009

3.8

1979

5.3

1969

5.5

2016

6.3

1996

7.2

2005

7.2