Readership of Canadian newspapers remains strong despite the financial problems plaguing the industry, according to figures released today by NADbank. Almost half of Canadian adults read a newspaper on an average weekday and weekly readership of newspapers in large markets has changed little during the past five years, the newspaper research organization reported. Meanwhile, the Canadian Circulation Audit Board also released circulation data for its member papers. Several daily newspapers recently stopped having their circulation audited by the Audit Bureau of Circulation and moved to the CCAB, which previously audited mainly community newspaper circulation.