I want a time bar graph where the X values of my data are rounded by minute, and the coinciding bars to stack and add up in value.

My data is something like this

data = [
{x : "2000-10-05T08:10:30", y : 2},
{x : "2000-10-05T08:10:50", y : 3},
{x : "2000-10-05T08:11:30", y : 2},
{x : "2000-10-05T08:12:30", y : 2},
{x : "2000-10-05T08:12:50", y : 1},
]