BRASILIA, June 30 (Reuters) - Brazil's public sector gross debt rose slightly to 76.1% of gross domestic product (GDP) in May from 76.0% in April, central bank data showed on Monday.
The public sector posted a primary deficit of 33.74 billion reais ($6.16 billion) for the month, narrower than the 42.7 billion reais shortfall forecast in a Reuters poll of economists.
($1 = 5.4777 reais)