Burke's Law

6.344

/

1955

5.7

/

1980

7.836

/

2011

8.01

/

1966

7.383

/

1999

6.949

/

1975

8.258

/

1989

7.562

/

2009

7.9

/

2008

7.6

/

2017

8.337

/

1990

7.4

/

2006

8.5

/

2011

8.427

/

2008

7.933

/

2015

8

/

2000

8.208

/

2003

8.144

/

2005

7.909

/

2007

7.9

/

2010