Source: https://www.researchgate.net/profile/Pawel_Folfas/publication/321310152_Long-term_trade_relationship_between_South_Africa_and_the_UK_-_before_and_during_membership_of_UK_in_the_EU_and_after_Brexit/links/5a1becb2aca272df080f3c89/Long-term-trade-relationship-between-South-Africa-and-the-UK-before-and-during-membership-of-UK-in-the-EU-and-after-Brexit.pdf