The growth in worldwide advertising expenditure is set to remain above 6% for the next three years, according to new forecasts published by global advertising group, Zenith Media. In 2000, growth is expected to accelerate to 6.5%, with levels in 2001 and 2002 holding above 6%. North America is set to be the fastest-growing region in 1999, up 7% on the previous year; Europe total ad expenditure is predicted to grow by 6% this year, to a total of US$84.3 billion (£52 billion). Zenith has upgraded its July prediction of global growth from 3.9% to 4.6% (after inflation) for 1999.