1998

6.1

1996

6.5

1993

6.5

1966

6.2

1985

6.8

1985

7.2

2006

6.7

1989

5.5

1980

6.4

2001

5.2

2020

6.5

1980

5.9

2016

6.4

2013

6.5

1954

6.7

2001

6.8

1988

6.2

2017

6.1

2008

6.2

1999

5.9