The degree to which anomalous hydrogen exists in cosmic rays may have a profound effect on structures in the heliosphere, such as the termination shock. Since the source of the anomalous component is believed to be neutral gas in the local interstellar medium (LISM) and since there is little neutral deuterium in the LISM, the deuterium/proton ratio provides information about the fraction of observed hydrogen which could be anomalous. The Pioneer 10 data have been reanalyzed with an improved galactic deuterium spectrum. This report includes all the Pioneer 10 deuterium data from the University of Chicago instrument. Our results agree with recent reports that anomalous hydrogen is a significant component to the total hydrogen measurements in the outer heliosphere. These new results suggest that the anomalous hydrogen comprised about 60% during the solar minimum of 1987 and about 45% during the 1978 solar minimum, of the hydrogen flux near 70 MeV. The anomalous hydrogen disappeared by 1991, reappeared at Pioneer 10 near 64 AU in 1995, and persisted strongly since then. ¿ 2000 American Geophysical Union