Domestic passenger vehicles sales in India plunged 30.98 per cent to 2,00,790 units last month, data from industry body SIAM or Society of Indian Automobile Manufacturers revealed on Tuesday. The drop in sales is the worst since December 2000, when the industry sold a fifth of the vehicles it sells currently. The sales report highlighted that passenger vehicle sales in the country declined for the ninth month in a row amid a contraction across segments as the "auto industry downturn" deepened. Out of the total passenger vehicle sales, the figure for the passenger car segment declined 35.95 per cent to 1,22,956 in July, according to SIAM data.