PERU CONSUMER PRICES RISE 5.3 PCT IN MARCH peru's consuemr price index rose 5.3 pct last month to 13,914.4 (base 100) following a 5.3 pct increase in february and 5.3 pct rise in march 1986, the national statistics institute said. It said that the accumulated inflation for the first three months of 1987 was 18.5 pct compared to 15.4 pct for the same period last year. Inflation for the 12-month period ending march 1987 was 67.4 pct compared to 120.8 pct for the 12-month period ending march 1986.