This line graph shows the proportion of people who have a postpaid or a prepaid service plan over time. The 1111 respondents in the 2018 survey answered as follows:
The 1277 respondents in the fall 2016 survey answered as follows:
The 925 respondents in the spring 2016 survey answered as follows:
The 1005 respondents in the 2015 survey answered as follows: