According to a joint report by the UN's World Tourism Organization and Conference on Trade and Development, the economic impact on tourism due to Covid since last year could top how much?

According to a joint report by the UN's World Tourism Organization and

1.	According to a joint report by the UN's World Tourism Organization and Conference on Trade and Development, the economic impact on tourism due to Covid since last year could top how much?
Answer» According to the UN report the economic impact from the plunge in tourism since the pandemic emerged last year could top 4 trillion Dollars.