This function is used to select the year of the data.
Important notes
Not all variables have a year option.
At this time, only one year at a time is allowed.
The year selected is not necessarily the year the data were produced. It may be the year the data were collected. For data collected over split years (fall to spring), it is likely the year represents the fall data (e.g., 2011 for 2011/2012 data).
Be sure to check with the College Scorecard data documentation report when choosing the year.