KUALA LUMPUR, Dec. 31 (Xinhua) -- Malaysia's producer price index (PPI) for local production decreased 2.9 percent year-on-year in November, according to official statistics on Monday. The Malaysian Statistics Department said in a statement that the decrease in the overall index was mainly due to agriculture, forestry and fishing which plunged 22.7 percent, manufacturing fell 1.8 percent and water supply dropped 0.1 percent. Conversely, the index of mining and electricity, and gas supply rose 4.5 percent and 1.2 percent respectively. As comparison, the PPI rose 0.7 percent year-on-year in October. As compared to the previous month, the PPI shrank 2.8 percent in November, dragged by index of mining, agriculture, forestry and fishing, manufacturing.