Agree with the PP.
The 16 2019 banked points on your contract can be used on any reservation that falls in your 2020 UY = December 1, 2020 - November 30, 2021
Your UY runs from December 1 - November 30 every year. The deadline for banking any points forward occurs 4 month prior to the start of your UY. Your banking deadline for your December UY is July 31. Once points are banked to a future UY they can only be used on a reservation that falls in that future UY.
Below is more information related to banking, that you didn't specifically ask for, but I hope you find helpful:
Another rule that trips new people up (it did me when I was new) is that banked points cannot be borrowed and/or transferred to another member. I tell you this because when I was new, I thought that you could only bank points forward once. It took me several years to learn that is not the case. You can make multiple banking transactions up to the point of your deadline (if you need/want to).
As a general rule, I try to wait until I'm a day or two out from my deadline before I bank because plans change, and I have been caught making a last minute plan in the last 4 months of my UY and obviously, you want to use your "oldest" points first. If you bank your points forward and then decide you want to travel in the last 4 months of your UY and don't have enough points to travel, you cannot pull those banked points back into the prior UY to make a reservation. You would have to borrow from your future UY in order to be able to make your new reservation.
Do not miss your banking deadline! Put it on your calendar, create a reminder on your phone, and be sure to pay attention to this date.
Congratulations on your purchase! I hope you make many happy memories in your new home.