2014

7.5

1994

6.7

2006

5.8

2007

5.3

1979

5.2

2003

5.9

1987

7.3

2006

6.4

1965

6.3

1986

5.6

2008

7.0

2009

5.4

2006

6.6

2006

5.8

2017

8.0

1998

6.6

1970

7.0

2004

7.5

1991

7.3

2004

7.1