London—The Warc Global Marketing Index rose to 55.0 in January, its highest level since last May, according to business intelligence company Warc. The index tracks trends in budgets, trading conditions and marketing staffing levels on a monthly basis. A GMI reading of 50.0 represents no change in global marketing conditions; a score of 60.0, rapid growth. A score below 50 marks a decline. The GMI for January is up from 50.1 in November and 52.5 in December. The Americas showed the highest GMI in January, with a score of 58.0, up from 56.8 in December. In Asia Pacific, the GMI in January was 53.8, up from 51.5; in Europe, the GMI was 51.9, up from 49.7.