05年: 18,004人: http://www.dhs.gov/xlibrary/assets/statistics/yearbook/2005/OIS_2005_Yearbook.pdf 看Table 11. 而06年: 隻有 8,547. http://www.dhs.gov/ximgtn/statistics/publications/LPR06.shtm 看Table 11. 什麽原因? 大家評評?