projection of total dash generated if budget is completely allocated (max) or never allocated (min)

dash-minmax_coin_projection.py

# blockchain state at first block of 2017
year_now = 2017
now_height = 596411
now_outstanding = 6990727

# 200423 == average annual block discovery rate across 2 years
avg_blocks_per_year = float(((596411 - 395793) + (395793 - 195565)) / 2)

# subsidy reduction interval in blocks
CYCLE_LENGTH=210240


def min_blok_subsidy(nHeight):
    nSubsidy = float(5)  # assume minimum subsidy
    for i in range(CYCLE_LENGTH, nHeight, CYCLE_LENGTH):
        nSubsidy -= nSubsidy/14
    return nSubsidy


future_year = float(year_now)
totals = {
    "max" : now_outstanding,
    "min" : now_outstanding
}

print "approx        minimum       maximum      min/max   difference"
print "date            coins         coins   difference   percentage"
for block in range(now_height, now_height+(CYCLE_LENGTH*200), CYCLE_LENGTH):
    
    future_year += float(CYCLE_LENGTH / avg_blocks_per_year)
    month = int((future_year - int(future_year)) * 12) + 1

    cycle_subsidy = (min_blok_subsidy(block) * CYCLE_LENGTH)
    totals["max"] += int(cycle_subsidy * 1.0) # full budget allocated
    totals["min"] += int(cycle_subsidy * 0.9) # no budget allocated
    
    delta = totals["max"] - totals["min"]
    delta_pct = (1.0 - float(totals["min"])/float(totals["max"])) * 100

    fmt="{:02d}/{}    {:10,d}    {:10,d}   {:10,d}        {:.2f}%"
    mod_scale = int(future_year) <= 2050 and 1 or 5
    if int(future_year) % mod_scale == 0:
        print fmt.format(month, int(future_year), totals["min"], totals["max"], delta, delta_pct)

run at https://repl.it/FDPd/5