ottawacanadian economic output unexpectedly flattened in april as modest growth by goodsproducing industries was balanced by continued weakness in wholesale trade and the impact on the public sector of a strike by federal government workers gross domestic product a broad measure of goods and services produced across the economy was essentially unchanged from the month before at 2085 trillion canadian dollars the equivalent of 1573 trillion statistics canada said friday economists were expecting gdp to climb 02 for the month according to td securities after an upwardlyrevised rise of 01 in march the data agency said that advance information indicates gdp rose 04 monthovermonth in may though the estimate will be updated