Which of the following currencies is NOT used to compute

the $"$US Dollar Index"?

Euro $($EUR$)$

Japanese yen $($JPY$)$

Pound sterling $($GBP$)$

Canadian dollar $($CAD$)$

Swedish Krona $($SEK$)$

Swiss Franc $($CHF$)$

Chinese Yuan $($CNY$),$ also called the Renminbi

Mexican Peso $($MXN$)$