The bar chart illustrates the proportion of senior citizens aged 65 plus totally of the US over a 100-year period starting from 1900.
Overall, it can be clearly seen that the number of elder population in the US had a significant increase during a given period. This figure was the lowest in 1900 which rose and hit a peak in 1990. Aged group from 65-74 had the largest number while 85 plus had the least number.
According to the given bar chart, the total US senior citizens aged 65-74 started at 4% in 1900 and it slowly rose to 8% in 1950, which doubled the figure at the first period. It continued to grown quickly and reached at nearly 13% in 1990, the highest number during 100 years. In 2000, this figure decreased a little by about 0.3%.
Additionally, aged group from 65 to 74 began at 2.9% in 1900 while 75-84 was at 1% and 85 plus had a very small proportion at 0.2%. The number of 65-74 and 75-84 aged groups grew to 5.6% and 2.2%; however, 85 plus aged group remained unchanged during 30 first years and slightly rose to 0.4 in 1950. For the next 20 years, the 65-74 age group stood at 6.1%, which was two times higher than the 75-84 age group at 3% and six times higher than the 85 plus age group at 0.7%. Furthermore, all three aged group continued to increase to 7.3% of the 65-74 age group, 4% of the 75-84 age group and only 0.2% of the 85 plus in 1990. The aged group 65-74% slowly declined by 0.8% whereas aged group 75-85 and 85 plus continued to increase by 04% and 0.3%, respectively.