Table 1.

The reported incidence of microinvasion by screening year.

Screening year	Microinvasion present	%	Microinvasion absent	%	Unknown	%	Total
03/04	74	7%	1040	93%	3	0%	1117
04/05	80	6%	1210	94%	1	0%	1291
05/06	57	4%	1260	95%	3	0%	1320
06/07	73	5%	1290	95%	2	0%	1365
07/08	54	4%	1282	95%	17	1%	1353
08/09	62	5%	1245	95%	9	1%	1316
09/10	42	3%	1272	97%	4	0%	1318
10/11	49	4%	1224	96%	3	0%	1276
11/12	30	3%	941	96%	10	1%	981
Grand total	521	5%	10,764	95%	52	0%	11,337