Norway's oil fund, one of the biggest investors in the world, rose in value by 13.4 per cent last year, its second-best performance ever. The Central Bank said, the fund's investments in shares jumped by 18.1 per cent in 2012, boosted by soaring equity indexes around the world. It is now worth 3.8 trillion krone (Dollar 670 bn), up from 3.3 trillion krone in 2011. Norway's fund invests the money from its huge oil industry in the nation's future. The sovereign wealth fund is now 40% bigger than the value of the entire Norwegian economy. If it was invested inside the nation, this would cause distortions like massive inflation.