Data Update Notice for Sampling Files at the Information Science Center:
Group A (2 million individuals sampled in the year 2000): The annual data for the 2000-2019 (20 years) sampling file will no longer be updated, and it is expected to be taken offline on January 30, 113th year.
An additional sampling file for 2 million individuals for the year 2015 is scheduled to be added on January 30, 113th year, focusing on generational tracking.