Between 1990 and 1998, the municipal council contributed one-third more in food and clothing for the beggars than did NGO groups from their own collections. In 2000, for the first time, NGO groups contributed more in food and clothing for the beggars than did the municipal council. Members of the NGO groups assert that this data shows a heightened commitment on the part of the NGO groups to assist the beggars.
Which of the following, if true, would cast most doubt on the assertion made by the members of the NGO groups?
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