Chart 1. Response rates at the data collection stage, by major group in the Consumer Price Index, 2002–20 (in percent)
Major group	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020
Food	91.51	90.81	91.82	91.91	91.69	91.02	91.37	91.53	91.31	91.43	91.30	89.16	89.83	88.60	88.50	87.70	86.50	88.00	69.41
Housing	89.37	89.20	90.19	89.93	89.76	89.95	89.87	87.82	89.62	89.67	87.49	84.48	85.55	86.80	87.20	85.50	81.60	81.70	73.02
Shelter	76.80	75.94	74.23	73.41	72.99	72.55	73.62	73.92	75.96	77.99	77.52	75.18	73.42	71.80	70.00	69.20	63.45	62.46	65.96
Apparel	53.30	52.26	52.46	53.85	53.12	53.20	53.60	50.72	55.30	55.78	51.93	52.75	55.24	59.80	60.70	59.00	56.10	60.60	56.46
Transportation	92.17	92.61	93.94	92.26	92.33	91.77	90.47	86.75	89.88	90.60	90.55	88.62	90.14	90.90	90.30	88.40	85.40	86.00	76.60
Medical care	90.38	88.90	88.53	82.03	80.16	76.99	75.91	70.34	69.09	65.36	62.72	58.51	53.30	48.00	47.40	49.70	48.10	47.20	40.81
Recreation	85.21	85.12	85.68	85.76	85.32	84.14	84.47	78.47	83.53	82.64	82.42	80.73	81.24	81.20	79.80	79.10	77.20	76.80	62.64
Education and communication	81.85	82.08	82.19	81.43	80.61	81.21	82.76	83.61	88.00	91.04	89.13	87.89	88.11	87.40	85.60	85.70	85.80	87.10	82.24
Other goods and services	92.07	91.84	92.26	92.04	92.66	91.57	91.72	89.68	90.83	90.52	90.72	88.74	87.85	85.90	87.50	87.50	83.10	82.30	65.21
Source: U.S. Bureau of Labor Statistics.