The aged dependency ratio, the ratio of the U.S. population ages 65 or over to that of

Question:

The aged dependency ratio, the ratio of the U.S. population ages 65 or over to that of ages 20–64, can be used to estimate the number of Medicare enrollees per worker. The following table shows Social Security Administration data for this ratio every 5 years from 1945 and projected to 2050. Construct a frequency histogram for these ratios using intervals of width 0.05.

Year Ratio Year Ratio 1945 0.124 2000 0.209 1950 0.138 2005 0.206 1955 0.157 2010 0.218 1960 0.173 2015 0.247 1965 0.182 2020 0.285 1970 0.185 2025 0.328 1975 0.190 2030 0.364 1980 0.196 2035 0.384 1985 0.202 2040 0.387 1990 0.209 2045 0.383 1995 0.214 2050 0.385