A worker stands next to buckets of freshly tapped rubber on a plantation in Kampong Cham province. Rubber prices have fallen four per cent in the first few days of September after climbing five per cent in August, according to the Cambodia Rubber Association. CRA president Mak Kim said prices often fell during the rainy season. Rubber exports increased about 47 per cent year-on-year in the first seven months of 2011, according to the Ministry of Commerce.