Type the correct answer in the box. Use numerals instead of words. The average number of subscribers to an online magazine each year from 2010 to 2015 is given in the table below.
Number of Years Since 2010 Avg. Number of Subscribers
0
320,000
1
384,000
2
460,800
3
552,960
4
663,552
5
769,262
The percent increase in the average number of subscribers each year since 2010 was _%.