SAN DIEGO—San Diego County’s unemployment rate increased to 4.7 percent in January, up from a revised 4.1 percent in December and below the year-ago estimate of 8.5 percent, according to figures released on March 11 by the state Employment Development Department (EDD). This compares with an unadjusted unemployment rate of 5.5 percent for California, which increased from 5 percent in December. The nationwide figure was 4.4 percent, up from December’s 3.7 percent during the same time period. Between December 2021 and January 2022, nonfarm employment decreased by 22,300, from 1,497,700 to 1,475,400. Agricultural employment shrunk by 200, from 8,000 to 7,800, according to EDD figures. Employment in trade, transportation, and utilities was down 5,800, the most significant month-over job decrease. Each of the sub-categories posted job losses. Retail trade was down 2,700 while transportation, warehousing, and utilities lost 2,200 jobs. wholesale trade was down 900. The largest share of the …