A legislative retreat raised more than $163,000 last year from agencies in government and private industry that lobby the General Assembly, according to documents made available yesterday.Advertisement This year's retreat, scheduled for more than 2,000 participants next month at Paris Landing State Park in Henry County, is expected to fetch similar sums from the same group of underwriters, said Barbara Nance, executive director of the Office of Minority Affairs. The Legislative Retreat and Training Seminar, in its 31st year, is the pet project of the Black Caucus, but it is organized by the legislatively created minority affairs office. Top donors...