What is the source of this table?

How many variables are presented? What are their names?

What is represented by the numbers presented in the second column? In the last row of the table?

Table 2.12 Percentage Distribution of Access to Public Benefits Among Mexican Immigrant and U.S.-Born Unmarried Mothers Mexican Born U.S. Born Variables Mexican Immigrant Mexican American Black Non- Hispanic White Non- Hispanic Total U.S.-Born Population Prenatal care in first 3 79 729 78.4 81.8 78.1 months of pregnancy Health insurance Medicaid 77 79 70.2 70 69.1 Private 16.3 162 22.9 23.8 24.8 Other 5.7 48 6.9 5.2 6.1 TANF receipt 12.2 204 38.9 14.8 29.6 Food stamp receipt 21.3 403 53.5 30.41 45.8 Rent assistance 7.2 223 24.4 99 21.0 Head Start 5.2 54 3.5 3.8 4.0 WIC receipt 84.0 88.1 80.7 76 84.6 Source: Adapted from Yolanda Padilla, Melissa Dalton Badey, Robert Hummer, and Eunjeong Kim, The Living Conditions of US-Bern Children of Mexican Immigrants in Unmarried Families," Hispanic Journal of Behavioral Sciences 25, no. 3 (2000): 343. Note: TANF Temporary Assistance for Needy Families; WIC Women, Infants, and Children Program.