2016

6.3

2006

6.2

2006

6.5

1990

6.9

1984

5.9

2012

0.0

2007

7.3

1991

6.8

1976

7.0

1964

6.2

2007

6.8

2014

5.3

1997

6.1

1997

6.0

1998

7.4

2015

6.0

1995

6.2

2004

5.6

2007

5.0

1976

6.2