Table 3.

Samples by category.

CATEGORY	2008–2017		2008		2009		2010		2011		2012		2013		2014		2015		2016		2017
	No.	%	No.	%	No.	%	No.	%	No.	%	No.	%	No.	%	No.	%	No.	%	No.	%	No.	%
EXTRA	272	37	29	56	48	61	25	58	27	36	11	18	11	12	21	27	33	41	29	34	38	43
FIRST	290	40	16	31	26	33	16	37	15	20	16	26	29	33	36	46	39	49	50	58	47	53
SECOND	40	5	4	8	5	6	2	5	2	3	4	6	8	9	3	4	2	3	7	8	3	3
UNKNOWN	131	18	3	6	0	0	0	0	31	41	31	50	41	46	19	24	6	8	0	0	0	0
TOTAL	733	100	52	100	79	100	43	100	75	100	62	100	89	100	79	100	80	100	86	100	88	100