Preliminary figures on a new Florida law requiring drug tests for welfare applicants are surprising some who backed that law. They show that welfare applicants are actually less likely than other people to use drugs. The numbers show that about two-point-five percent of those applying for Temporary Assistance For Needy Families tested positive since the law went into effect in July. That compares with a Justice Department estimate that around six percent of Americans use illegal drugs. Florida is the only state to implement such a law.