SAN DIEGO—The unemployment rate in San Diego County decreased to 4.6 percent in November, down from a revised 5.3 percent in October, according to figures released Dec. 16 by the state Employment Development Department. This compares with an unadjusted unemployment rate of 5.4 percent for California, which decreased from 6.1 percent in October. The nation’s unadjusted unemployment rate dropped from 4.3 percent in October to 3.9 percent in November. Between October and November, nonfarm employment increased by 15,000, from 1,445,600 to 1,460,600, according to the state’s figures. Agricultural employment decreased from 9,400 to 9,200. Trade, transportation, and utilities led all industries with 7,300 jobs gained. Employment in educational and health services increased by 3,700. Health care and social assistance were responsible for 76 percent of the growth, or 2,800 jobs. Job gains were also recorded in government with 1,700, leisure and hospitality with 1,700, professional and business services with 1,300, …