Triple: Brunei Darussalam GDP_(USD_PPP_BLN,_2017) 28.31; Brunei Darussalam GDP_(USD_PPP_BLN,_2012) 21.94

What is a sentence that describes this triple?
In 2012, the GDP by USD PPP was 21.94 and then 28.31 in 2017 in Brunei Darussalam.