6.0

1978

7.5

1956

6.4

2013

6.5

1954

6.7

1985

6.6

1986

5.8

1987

6.2

2009

6.9

2004

6.7

1967

7.0

2012

7.4

2021

6.3

1992

5.7

2016

7.7

2005

5.4

2014

7.0

2010

5.5

2009

4.5

2014

6.9