Consider a warehouse with 5 SKUs. The unit selling prices for these items are $108, $5, $561, $500, and $639 respectively. The annual sales volumes for these 5 items are 965 units, 1,000 units, 2,000 units, 20 units, and 413 units. According to our discussion on inventory profiling, what percentage of the annual sales is the result from the top 20 % of the SKUs? Ignore the percentage sign and round your answer to the nearest integer. For example, if your answer is 34.56%, input 35; if your answer is 12.23%, input 12.