about dash coin inflation 7.1% reduce in coin

i have a question that dash saying that 'Estimated 19 million coins maximum, with a 7.1% decrease in the number of coins generated per year' and the dash is start at '18 January 2014'.

question 1: so which mean the dash coin will only supply max 7.1% per year and will not more than that? or dash estimated will not much miner mining with dash so put a average of supply in 7.1% but it will be more than?

question 2: and until the next year 18 January 2018 than dash will start the new 7.1% coin supply to the market? which mean right now for antminer D3 with 15GH hasrate, past few day i see the calculator giving me per month 21DASH but today only can get 19DASH with same 15GH hasrate.

question 2(1): if as what i say after 18 January 2018 the new 7.1% coin will generated than with an 15GH hasrate i will get the DASH with more than the amount today the calculator give me?

THANK YOU FOR ANSWER MY QUESTION REALLY THX SO MUCH. this is becasue i have looking for those information but i cant get the answer i want maybe i get confluence. what i get the naswer is after a year 7.1% will keep generated but they didnt mentioned about the DASH mining that we will get is more than today or maybe lower due to block difficulty increase.