Pro tools 12.3 cost to stay current.

Hi I have Pro Tools 12.3 it will keep current till 2nd june 2016,my question is

1)how much will it cost me to stay current each year 214.20 euros or 105.91 euros.I cant seem to understand the difference at the Avid store.

2)Do i have to upgrade every 2nd june or before the end of a year?


Thanks

Pro tools 12.3 cost to stay current.