BRUSSELS, Jan 8 - Producer prices in the euro zone inched up by 0.1 percent in November from the previous month for an annual increase of 1.4 percent, the European Union's statistics office said on Thursday. The monthly rise was slightly higher than expected by economists. A poll of economists had forecast unchanged producer prices in November from October while the annual rise was forecast at 1.20 percent. The energy sector was the only sector to show a decline in monthly prices, down 0.1 percent from October. But compared with November last year, energy prices were 3.4 percent higher, reflecting the continued stickiness of oil prices over $30 a barrel.//