&csv_to_hash("$datadir/Membership.csv",\%membership_data);
&csv_to_hash("$datadir/HomeTeaching.csv",\%hometeaching_data);
&csv_to_hash("$datadir/Organization.csv",\%organization_data);
&csv_to_hash("$datadir/Membership.csv",\%membership_data);
&csv_to_hash("$datadir/HomeTeaching.csv",\%hometeaching_data);
&csv_to_hash("$datadir/Organization.csv",\%organization_data);