The line graph illustrates the figure for income across different occupations in the USA from 1970 to 2010.
Overall, the output of IT and engineering staff followed upward patterns with various degrees, whereas the figure for professional sports bucked the trend. In addition, the salary of sportsmen was higher in each year.
The output of engineers and people who work in IT sphere increased. The former was 55000 dollars in 1970, and it then rose slightly to 60000 dollars in 1980. By 1990, the salary of engineers had grown minimally by 2000 dollars and reached 70000 dollars in the final year. The latter was 35000 in the first year; then it went up significantly to 55000 dollars in 1980. After a considerable increase to 80000 dollars in 2000, the income of IT specialists reached a peak of 100000 dollars in 2010.
Regarding the professional athletes, their output saw a drop. In 1970, they earned 120000 dollars, and next the figure for salary underwent a negligible rise to 130000 dollars. While its number fell minimally to 125000 dollars in 1990, it then grew markedly to 145000 dollars. By 2010, the income figure had declined by 35000 dollars.