Tabulation of Results
which_year x which_year
	Both	Differnt	Not_bul	Same
Both	21	0	0	0
Differnt	0	34	0	0
Not_bul	0	0	87	0
Same	0	0	0	51

Tabulation of Expected Results
which_year x which_year
	Both	Differnt	Not_bul	Same
Both	2.28	3.7	9.47	5.55
Differnt	3.7	5.99	15.33	8.98
Not_bul	9.47	15.33	39.22	22.99
Same	5.55	8.98	22.99	13.48

Statistical Results
Pearson's Chi-squared test
Chi Square Statistic	579
Degrees of Freedom	9
P value	0