There are differences in Gen X population numbers depending on the date-range selected. In the U.S., using Census population projections, the Pew Research Center found that the Gen X population born from 1965 to 1980 numbered 65.2 million in 2019. The cohort is likely to overtake boomers in 2028. A 2010 Census report counted approximately 84 million people living in the US who are defined by birth years ranging from the early 1960s to the early 1980s. In a 2012 article for the Joint Center for Housing Studies of Harvard University, George Masnick wrote that the "Census counted 82.1 million" Gen Xers in the U.S. Masnick concluded that immigration filled in any birth year deficits during low fertility years of the late 1960s and early 1970s. Jon Miller at the Longitudinal Study of American Youth at the University of Michigan wrote that "Generation X refers to adults born between 1961 and 1981" and it "includes 84 million people". In their 1991 book "Generations", authors Howe and Strauss indicated that the total number of Gen X individuals in the U.S. was 88.5 million.