Updated from 6:57 a.m. EDTEven though the market keeps dropping, dividend increases keep on coming. New dividends are being declared, too. Power Integrations ( POWI) declared its first-ever quarterly dividend of 2.5 cents per share. And there are also special dividend declarations, such as Renaissance Learning's ( RLRN) special cash dividend of 75 cents, which is in addition to its quarterly dividend of 7 cents per share. Stockpickr has reviewed all the stocks that declared dividends during the last week and compiled a list of the top dividend-increasers for the week, including Airgas ( ARG) and Goodrich ( GR). To read more, visit Stockpickr.com.