... Department of Commerce, Statistical Abstract of the United States: 199 8 (Washington, D.C.: U.S. Government Printing Office, 199 8), table 732. To obtain the total cost of childcare, you must then ... August 31, 198 7, p. 5. 2 See Nancy L. Rose, Financial Influences on Airline Safety, no. 1 89 0-8 7 (Cambridge, Mass.: Sloan School of Management, Massachusetts Institute of Technology, 198 7; and ... has, indeed, reduced travel by automobiles (by an annual average of nearly 4 percent between 197 9 and 198 5).4 However, because miles traveled on highways and automotive accidents and deaths are...