useless trivia: What Word Means: An Oval Japanese Gold Coin - A Japanese?

Questions

Less than ---------- of Nestle's sales are for chocolate. ?

Less than 3% of Nestle's sales are for---------- . ?

Less than ---------- of the population donates blood. ?

Less than 7% of the population donates---------- . ?

Less than two percent of the water on Earth is---------- . ?