2007

6.0

1989

5.3

2003

5.5

2020

6.5

2006

6.8

2006

6.7

2001

6.8

2017

6.6

2014

6.7

2004

6.4

1959

6.1

1988

6.5

1978

5.9

2011

6.6

1966

6.1

1995

5.9

1989

6.2

1985

7.2

1996

6.5

2009

5.8