This claim will be true if before 2020, world oil production declines by at least 3% for 2 years in a row according the figures in the BP Statistical Review of World Energy(Normally published in June).
If BP ceases to publish figures, the judge may substitute a similarly authoritative source and if none is available, judge this claim true.
The 2004 figures are here.
Note: the last year for which the judge will consider production figures are those for 2020. Even if oil declines in 2019 and 2020 but not in 2018 this claim will be judged false.