?? ???? ?????? ???, ???, ???, ???, ???, ?????????, ????, ???????, ?????? ???? ???, ?????? ?????. 104?? ??? 4?? ?????? ???? ??, ?? ???(建制镇)? 75?, ?? ??? 969?, ?? ???? 480? ??. 1997?7? ?? ???? 4?1?? ??? ?????? ?? ??? 124? ??. 1996-2000? ?? ??? 51?? ?? ???? ??? ????. 2000?5?, ?????? ??? ?? 15? ??? 6? ??? 4?? ?? ???? ??? ??, ? 126? ?? ??? 111?? ?????. 2001?6?, ??????? ????, ?? ??? 2500? ??? ?? ???? ???? ? ?? ??? ??? 2299???? 1418?? ????? ???? 38%? ???.  2004?3?, ?????? ????? ???? ???? ???? ????. ??? ??? ???? ??? 2108??? ????? ????? ??? 150??? ??? ???. 2005?7??? ?????? ??? ?? ???? ???, ???, ???? ???? ?????, ???? ???, ???? ???? ?? ?????? ???? ?????, ???? ???, ???, ??? ??? ???? ???? 3??? ?? ??? ??? ?? ???.