The previous year has seen a continuation of volatility in aluminium market prices, with prices increasing from $1843 per tonne in August 2012, to a high of $2087 per tonne in December 2012, to current prices of $1842 per tonne. At current market prices, visiongain estimates that 33% of aluminium producers are operating at a loss. A few nations have seen government intervention to absorb losses by aluminium producers, or providing tax breaks or cheaper energy. This government intervention is resulting in a large quantity of over-supply of aluminium suppressing prices further. Excessive warehousing of aluminium is also a result of the over-supply, with an estimated 5.5 million tonnes stored.