Calculate a four-quarter weighted moving average for the number of shares outstanding for the Boxley Box Company for the nine quarters of data. The data are reported in thousands. Apply weights of .1, .2, .3, and .4, respectively, for the past three quarters and current quarter. In a few words, describe the trend in the number of subscribers.
1st Quarter 2011 ........... 28,766
2nd Quarter 2011 .......... 30,057
3rd Quarter 2011 .......... 31,336
4th Quarter 2011 .......... 33,240
1st Quarter 2012 .......... 34,610
2nd Quarter 2012 ........... 35,102
3rd Quarter 2012 .......... 35,308
4th Quarter 2012 .......... 35,203
1st Quarter 2013 .......... 34,386