The US economy grew at a solid 2.2 per cent pace from April through June as consumer spending and business investment came in strong. Growth in gross domestic product – the nation’s output of a goods and services – decelerated from a 2.5 per cent pace from January through March, the Commerce Department reported Wednesday. The second-quarter growth was an improvement on the department’s previous estimate of 1.5 per cent – a surprise to economists who had expected little or no change in the GDP number.