Last week I wrote an introduction and an overview for the graph below. Today I'm going to describe specific details.
The graph below shows trends in US meat and poultry consumption.
(Note: I'm ignoring the forecast and treating 2012 as a past year)
Between 1955 and 1976, US beef consumption rose from around 60 to a peak of 90 pounds per person per year. During the same period, consumption of broilers also rose, to nearly 30 pounds per person, while the figures for pork fluctuated between 50 and 40 pounds per person. Turkey was by far the least popular meat, with figures below 10 pounds per capita each year.
By 2012, the amount of beef consumed by the average American had plummeted to around 50 pounds, but the consumption of broilers had doubled since the 1970s, to approximately 55 pounds per capita. By contrast, there were no significant changes in the trends for pork and turkey consumption over the period as a whole.
Analyse the above paragraphs carefully. Look at which figures I decided to include, the language used for comparisons, and the way I divided the description into two separate paragraphs.