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Reserves and Production per day

Proved reserves
Production per day
  FY 2015/3 FY 2016/3 FY 2017/3 FY 2018/3 FY 2019/3
Proved reserves : Overseas
(mmboe)
203 255 277 229 323
Proved reserves : Domestic
(mmboe)
110 94 74 73 64
Proved reserves : Total
(mmboe)
313 349 352 302 387
Production per day : Overseas
(Thousand boe/d)
54 54 52 42 45
Production per day : Domestic
(Thousand boe/d)
20 19 19 18 17
Production per day : Total
(Thousand boe/d)
74 73 72 60 62
*
Proved reserves are shown by boe (barrels of oil equivalent), and Production per day are shown by boe/d (barrels of oil equivalent per day).
*
Proved reserves are at the end of the fiscal year, and production per day are the average of the fiscal year, including bitumen (an extra-heavy crude oil extracted from oil sands) for the crude oil. And these figures includes the equity ratio of the consolidated subsidiaries and equity-method affiliates.
*
Proved reserves represents estimated quantities of crude oil and natural gas according to surface conditions that geological and engineering data demonstrate with reasonable certainty to be recoverable from known crude oil and natural gas reservoirs under existing economic and operating conditions. They do not include past production or resources related to undiscovered deposits.