1982

7.9

2016

6.1

1979

8.2

2004

8.1

2014

7.9

2003

8.5

2013

7.2

2009

7.6

1977

8.2

2017

8.1

2013

7.2

1994

8.3

2016

7.9

1994

7.0

1999

8.2

2016

7.6

2015

7.9

1988

7.9

2017

7.4

1994

8.5