2005

6.3

2019

6.5

2014

6.9

1966

6.1

1999

5.9

1980

6.4

2002

7.4

2009

5.8

2006

6.0

1985

6.7

1980

5.9

1989

5.5

1954

6.7

2000

5.2

2000

9.4

1994

6.6

2001

6.8

1971

6.0

2013

6.7

1970

6.0