Table 6.

Proportion of breast cancer cases having hormone-receptor negative and HER2-negative tumors by year

Year	Total N	Number by estrogen receptor status negative	Row % by estrogen receptor status negative	Number by progesterone receptor status negative	Row % by progesterone receptor negative	Number by HER2-receptor status negative	Row % by HER2-receptor negative
2010	49,404	8,740	17.70%	14,410	29.20%	42,036	85.10%
2011	52,452	9,131	17.40%	14,845	28.30%	44,894	85.60%
2012	53,808	9,099	16.90%	14,919	27.70%	45,877	85.30%
2013	55,493	9,001	16.20%	14,785	26.60%	47,335	85.30%
2014	56,482	9,342	16.50%	15,084	26.70%	47,538	84.20%
2015	58,491	9,583	16.40%	15,714	26.90%	49,071	83.90%
2016	58,954	9,241	15.70%	15,704	26.60%	49,594	84.10%
2017	60,770	9,810	16.10%	16,077	26.50%	51,379	84.50%
2018	62,709	9,731	15.50%	16,517	26.30%	53,865	85.90%
2019	64,605	9,870	15.30%	16,769	26.00%	55,999	86.70%
Total	573,168	93,548	16.30%	154,824	27.00%	487,588	85.10%