# data extracted from https://en.wikipedia.org/wiki/History_of_hard_disk_drives
1980 5
1983 10
1988 20
1990 857
1991 1004
1997 16800
2005 500000
2006 750000
2007 1000000
2008 1500000
2009 2000000
2010 3000000
2011 4000000
2013 6000000
2014 8000000
2015 10000000
2017 14000000