The total points for the year varies a little year to year. Obviously leap years have an extra day, but they also vary because of the way weekend days fall within the different seasons, year to year.
Here's the total points for a year for each villa type, for 2007 - 2010:
Year---Studio---1-B/R---2-B/R---Grand Villa
2007: .. 5,116 ... 10,315 ... 13,976 ... 23,158
2008: .. 5,129 ... 10,341 ... 14,011 ... 23,219
2009: .. 5,114 ... 10,311 ... 13,971 ... 23,148
2010: .. 5,137 ... 10,358 ... 14,036 ... 23,254
Warning: Mathematical analysis ahead. Proceed at your own risk....
To see how this works, let's look at the points required to book a Grand Villa for the entire month of December. Every year December has the 1st - 14th in Adventure season, the 15th - 23rd are in Choice season, and the 24th - 31st are Premier season.
In 2007, December Adventure season had 10 weekdays and 4 weekend days.
In 2010, December Adventure season has the same.
In 2007, December Choice season has 6 weekdays and 3 weekend days.
In 2010, December Choice season has 7 weekdays and 2 weekend days.
In 2007, December Premier season has 6 weekdays and 2 weekend days.
In 2010, December Premier season has 5 weekdays and 3 weekend days.
For a GV for the month of December, 2007, it would take 1,933 points, but in 2010 it would be 1,976 points, a difference of 43 points. that difference comes from the one single weekend day which changes from Choice season in 2007 to Premier season in 2010.
Choice season, a weekend day is 91 points. Changing to a weekday goes to 38 points. A savings of 53 points.
Premier season, a weekday is 66 points. Changing to a weekend day goes to 162 points. An increase of 96 points.
Net change = 96 - 53 = 43 point increase.
Do the same for the other 11-months, and the total net change is as shown in the chart at the very top.
All point total calculations were done using DVC-Planner by Caskbill (see link below).