You have started trading in the commodity markets and are therefore investigating the possibilities of making a profit.

 At present, the spot price for copper is SEK 131.30 per kilo, at the same time as it is also traded on a semester in one year and then at a semester price of SEK 142.94 per kilo. The cost for storage for one year is 7.33% of the spot price and the risk-free interest rate is 2.67%. 

Calculate how much arbitrage profit you can make per semester at the end of the term.