Bengaluru: Growth in North American advertising spending in 2017 is being lifted by Canada’s buoyant economy and is outpacing growth in western and central Europe where Britain’s political and economic uncertainty has weighed, a leading forecaster said.

Zenith, owned by France’s Publicis, forecast growth of 3.6 per cent in North American advertising spending in 2017 and an average of 3.4 per cent a year 2019.

A slowdown in Britain would drag down spending growth in Western and Central Europe to 2 percent in 2017 from 3.9 percent last year, Zenith said, adding it expected average annual growth in the region of 2.6 percent to 2019.

The United States, the world’s largest economy, would be the leading contributor of new ad dollars to the global market over the next three years and China would rank second, Zenith said.

Global advertising expenditure was expected to grow by 4 per cent in 2017 reaching $558 billion (Dh2.05 trillion), down from 4.8 per cent in 2016, Zenith said. In June, it forecast growth of 4.2 per cent in 2017.

Zenith said a slowdown in Britain, usually an outperformer in advertising spending in western and central Europe, would weigh. Regional spending growth would be 2 per cent in 2017 and average 2.6 per cent a year to 2019. It was 3.9 per cent in 2016.

In June, Zenith forecast a 0.9 per cent growth in British advertising spending in 2017, down from 9.6 per cent in 2016.

Results from some advertisers have shown an upbeat picture in North America. Publicis reported a second quarter rise in underlying sales helped by North American revenues. Omnicom , the No 1 US advertising firm, reported better-than-expected quarterly results in July.

However, WPP, the world’s largest advertising group, and Interpublic both reported weaker figures.