The aluminium metal market service long term outlook (LTO) is published quarterly and provides a detailed forecast of aluminium supply and demand fundamentals out to 2035. The main changes since the September 2017 LTO centres on an upward revision to global demand growth and lower short term growth in Chinese smelter output. These adjustments has tightened our market balance further. We now expect days of consumption in 2017 to fall below our long term average of 70 days. Further out we project a more or less balanced market. However, it should be noted that the market still continues to carry a high level of inventory over the medium term, hitting 13 Mt by 2021.