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Two million pounds of wheat flour are exported every year.
Literal
Every-year 2,000,000 pounds' wheat-flour [subject-が] is-being-exported.
The 粉 ('powder, flour') suffix on 小麦 distinguishes 小麦粉 ('wheat flour,' the processed product) from 小麦 ('wheat,' the grain) — a productive pattern: 米粉 (rice flour), パン粉 (breadcrumbs). The present progressive ~ている of the passive 輸出される describes an ongoing trade flow; combined with 毎年, it asserts a sustained annual figure rather than a one-time event.