what is the amount of time between these dates? 12/30/2021 7/6/2015 12/30/2021 1/5/2015 12/30/2021 12/14/2015 12/30/2021 9/12/2016 12/30/2021 2/6/2017 12/30/2021 3/30/2015 12/30/2021 9/23/2015 12/30/2021 9/20/2017 12/30/2021 10/1/2006 12/30/2021 3/25/2013 12/30/2021 8/5/2014 12/30/2021 10/12/2015 12/30/2021 7/11/2005 12/30/2021 11/14/2005 12/30/2021 11/30/2015 12/30/2021 8/17/2015 12/30/2021 7/11/2016 12/30/2021 2/16/2016 12/30/2021 9/20/2017 12/30/2021 12/5/2011 12/30/2021 6/8/2015 12/30/2021 9/29/2014

calculate please,