Nov 2017 - Dec 2017 $BTC

$8000- $9000: 9 days
$9000-$10000: 2 days
$10000-$11000: 1 day
$11000-$12000: 6 days
$12000-$13000: 17 hours
$13000-$14000: 4 hours
$14000-$15000: 10 hours
$15000-$16000: 5 hours
$16000-$17000: 2 hours
$17000-$18000: 10 minutes
$18000-$19000: 3 minutes