These soon hatch into legless white maggots which after 2 to 5 days of development transform into reddish-brown pupae, about 8 mm (0.3 in) long. Adult flies normally live for 2 to 4 weeks but can hibernate during the winter.
The American Community Survey (ACS) is a 21-page questionnaire generated by the US Department of Commerce under the auspices of the US Census Bureau. Funded by tax dollars, the lengthy questionnaire is mailed to 2% of the US population annually.
Current Population Survey (CPS) Data at the NBER. Basic Monthly Data are the primary source of labor force statisitcs in the U.S. Topics include employment, earnings, and demographic data. CPS Supplements, when collected, are not a part of the Basic Monthly Data files. Households are in the survey eight times: four consecutive months, eight months off, and then a final four months. Available for every month from 1976 on. SAS, SPSS, & Stata data definition statement files are available.