1964

6.2

2006

6.2

1996

6.6

2003

5.3

2003

7.2

2014

5.3

1995

6.2

1959

6.9

2000

6.4

1991

5.5

1986

0.0

1997

6.1

2006

6.5

2004

5.6

2006

6.7

1997

6.0

2017

6.0

2012

0.0

2009

6.8

1982

5.0