2009

6.2

2014

3.0

2015

6.7

2003

5.7

1979

6.3

1978

7.6

1960

7.7

1994

5.0

1964

6.5

2008

7.1

2000

6.3

2010

6.9

1968

6.7

2017

0.0

1949

7.7

1986

5.8

2002

6.1

1994

7.3

2005

6.2

2008

6.2