Although there were hundreds of people who recognized Jesus as the Messiah on Palm Sunday, they were a small minority. By the end of the 1st Century, perhaps 20% of the Jewish population had accepted Christ, but the leaders and the majority did not.
[Source: An essay by Dr. Louis Goldberg found in the book, "The Enduring Paradox," John Fischer, editor, Messianic Jewish Publishers, 2000, p. 114]