The tables gives information about the amount of average calories that are consumed in three different years across a range of food sources in the United States.
Overall, the amount of calories is increasing and most of the calorie intake can be seen in the meat, eggs and nuts, grains, and added sugar and fats categories. The dairy, fruit and vegetable categories are the lowest and they are slightly decreasing over the 3 different time periods.
In 1950 the total amount of calories was 2165 and this increased by about 250 to 2405 in 1990. The increase is similar in 2010 (2665). While added sugar and fat showed a steady increase from 400 and 410 in 1970 to 445 and 460 in 1990 respectively, added fat saw exponential growth in 2010 seeing an almost 50% increase to 640. Meat, eggs and nuts dipped slightly in 1990 (465 to 455) which contrasts with a significant increase in grains intake in the same year (430 to 575).
The intake of dairy, fruit and vegetable is noticeably less than the other categories. The difference between each each is also a lot closer than the other categories, with only a 5-15 point difference for these three categories between 1970 and 2010. Dairy intake is the only category that consistently drops each year from 265 in 1970, 260 in 1990 down to 255 in 2010.