2013

7.3

1978

7.5

2004

7.7

2002

7.6

2003

7.4

2016

5.4

1988

6.8

1944

6.0

1999

5.8

2016

6.1

2008

4.1

2008

3.9

1998

6.0

1974

7.2

2004

5.5

2015

6.1

2013

5.8

2013

6.4

2014

6.4

2016

7.7