Bitcoon history ; how its go up.

The history of bitcoins:
$0 - $1000: took 1789 days
$1000 - $2000: 1271 days
$2000 - $3000: 23 days
$3000 - $4000: 62 days
$4000 - $5000: 61 days
$5000 - $6000: 8 days
$6000 - $7000: 13 days
$7000 - $8000: 14 days
$8000 - $9000: 9 days