Data Buckets (in a range)

I currently have data orgnised as such:

CUSTOMER YEARS AMOUNT(USD)
Customer A 1.2 100
Customer B 2.5 200
Customer C 0.66 300
Customer D 6.2 100
Customer E 3.4 150
Customer F 1.7 50
Customer G 5.0 200
Customer H 4.2 25

I have a big spreadsheet of around 6000 rows and would like to rearrange the data into a range bucket by years (using pivot tables), i.e.

YEAR BUCKET AMOUNT(USD)
0-3 650
3.1-5 375
5.1-10 100


Many thanks in advance for your help

Attached is the excel version of the example above