2013

6.5

2004

6.1

1991

5.7

2010

6.8

1966

7.7

2023

6.1

2001

6.4

1993

6.5

2006

6.3

2017

5.9

1976

7.6

2003

7.3

1988

6.4

1971

6.0

1977

6.6

2016

6.1

2015

6.4

2020

6.9

1978

5.9

2001

6.6