The graph below shows trends in US meat and poultry consumption

The line graph illustrates the amount of beef, pork, broilers and turkey consumed by Americans from 1955 to 2012.
It is clear that the beef and pork consumption dramatically decreased while that of broilers and turkey increased over the 57 years of period. Also, the quantity of beef was the most popular of the four types of meat over the whole period.
In 1955, the amount of beef consumed by Americans was the highest, at around 58 pounds per person per year, then it increased rapidly to a peak of 90 pounds in 1976 before decreasing gradually by about 50 pounds in 2012. Meanwhile, US pork consumption fluctuated between about 38 pounds and 55 pounds from 1955 to 2000 and reached over 40 pounds per capita in 2012.
Beginning in 1961, the yearly consumption of broilers achieved just about 15 pounds. This figure dramatically rose to peak at 60 pounds in 2009 and then slightly declined to about 55 pounds per capita at the end of period. Likewise, turkey consumption grew up from 5 pounds to over 10 pounds throughout 51 years.