Since 1955, immigrants from the Gilbert Islands (now Kiribati) have settled in underpopulated areas. Movements from the countryside to Honiara and north Guadalcanal have created problems of overcrowding. The resentment engendered by those who moved from the heavily populated island of Malaita to Guadalcanal resulted in violence in 1999. The net migration rate for 1999 was zero. In 2000 the total number of migrants was 4,000. The government views the migration levels as satisfactory.