2015

8.0

2002

5.4

2004

6.7

2009

5.8

1950

7.0

2000

7.1

1988

4.5

1979

6.9

2009

5.4

2009

7.3

1969

7.2

1947

6.9

1993

6.2

1976

7.9

1967

7.1

1998

7.0

2013

0.0

1944

6.8

1987

4.4