Frankfurt, Aug. 14 (BridgeNews) - German wholesale price inflation in July dropped to 2.2%, marking the lowest level since October 1999, according to data released by the Federal Statistics Office in Wiesbaden Tuesday. In the monthly comparison wholesale prices fell 0.8% from June, as prices for live pigs, pork and petroleum showed the most significant declines. Excluding oil products, wholesale prices in July fell 0.5% from June and were up 2.3% on the year.