Growth in consumer spending slowed in the first three months of the year.
Statistics New Zealand's retail trade survey recorded a rise of 0.7 per cent in the March quarter seasonally adjusted and after price changes, following a strong 1.4 per cent increase in the last three months of 2013, to be 3.8 per cent higher than a year ago.
Bank of New Zealand economist Craig Ebert said with a surge in net immigration boosting population growth, retail sales were up 0.2 per cent in real per capita terms in the quarter and 2.5 per cent for the year.
ASB economist Daniel Smith questioned the reported 0.8 per cent drop in supermarket sales volumes - much the largest category of spending - compared with a year ago.
"With a net migration gain of 32,000 over the past year we find it difficult to believe New Zealand is consuming less food than a year ago," he said.