There is a list of numbers as shown below

Date [Column A], occurrence [Column B]
14-Jun, 2
14-Jun, 2
17-Jun, 1
15-Jun, 3
23-Jun, 2
16-Jun, 2
26-Jun, 2
17-Jun, 2
05-Jul, 1
19-Jun, 2

I would like to sort the list in ascending order and determine the total
occurrences for each date. As shown below

14-Jun, 4
15-Jun, 3
16-Jun, 2
17-Jun, 3
19-Jun, 2
23-Jun, 2
26-Jun, 2
05-Jul, 1

Does anyone have any suggestions on how to do it?
Thank in advance for any suggestions
Eric