Figure 1. Index of output in single-family and multifamily new housing construction, 1987–2016 (base year 1987 = 100)
Year	Single-family new housing construction	Multifamily new housing construction	Quality improvement index in single-family housing
1987	100.00	100.00	100.00
1988	96.67	90.04	104.82
1989	92.04	92.03	108.47
1990	82.99	84.04	107.12
1991	72.64	68.59	103.94
1992	83.33	60.53	100.42
1993	93.27	51.91	98.65
1994	105.27	66.36	98.45
1995	99.41	81.71	98.35
1996	110.52	91.20	101.26
1997	113.03	99.21	104.22
1998	126.17	102.69	104.89
1999	136.52	114.39	107.52
2000	139.28	116.67	109.17
2001	141.83	125.58	108.59
2002	149.94	136.81	111.50
2003	171.18	150.18	113.62
2004	196.82	171.22	117.73
2005	215.22	197.18	118.03
2006	200.93	207.37	116.93
2007	154.72	194.54	118.44
2008	102.26	176.51	—
2009	65.57	120.52	—
2010	69.39	70.23	—
2011	66.57	74.72	—
2012	77.85	104.51	—
2013	92.52	136.00	—
2014	97.02	168.01	—
2015	106.92	187.72	—
2016	112.18	204.03	—
Note: Recession periods as determined by the National Bureau of Economic Research are July 1990 to March 1991, March 2001 to November 2001, and December 2007 to June 2009. Source: U.S. Bureau of Labor Statistics.