Pollster and market research agency YouGov hailed strong growth in its global data business as it reported annual trading in line with hopes.YouGov, whose flagship online opinion profile Opigram is filled in and updated by 350,000 UK panel members, carries out political polling and research for industries ranging from financial services and telecoms to sports organisations and transport operators.It said revenue growth was outperforming the overall market research industry as it continued to invest."Consistent with this we're seeing strong growth as planned in our global data products and services," it said in a trading statement on its financial year to July 31st.It added that its balance sheet was still strong with net cash at July 31st of about £6.0m.PW