Table 2. Accuracy by year of surgery.

Year	% correct	% tumor downstage	% tumor upstage	% nodal upstage	% pT0–2N+/pT3–4 (upstage)	% pT0–1N0 (downstage)	% pT0–2N0 (correct/downstage)
2004	39.3	19.6	21.4	19.6	41.1	19.6	58.9
2005	42.8	15.1	26.1	16.0	42.0	15.1	57.9
2006	34.1	24.6	23.9	17.4	41.3	24.6	58.7
2007	37.5	21.3	20.6	20.6	41.3	21.3	58.8
2008	34.2	21.5	24.2	20.1	44.3	21.5	55.7
2009	35.9	21.8	22.2	20.1	42.3	21.8	57.7
2010	26.2	28.3	29.5	16.0	45.6	28.3	54.5
2011	19.6	31.5	30.6	18.3	48.9	31.5	51.1
2012	20.2	30.9	34.6	14.4	48.9	30.9	51.1
2013	28.5	32.2	22.4	16.8	39.3	32.2	60.7
Overall	30.7	25.5	25.9	17.9	43.8	25.5	56.2