2011

6.0

2017

7.2

2007

5.6

2014

7.8

1990

7.0

2015

6.6

1994

6.4

2005

6.2

1959

8.0

2017

8.0

2016

7.7

1988

7.4

1994

6.5

2010

6.7

1995

8.1

1989

7.8

2015

8.0

1991

8.3

2012

7.8

1989

6.3