CREATE TABLE table_73741 ("Year" FLOAT, "Division" FLOAT, "League" CLOB, "Reg. Season" CLOB, "Playoffs" CLOB, "Open Cup" CLOB)

Name the total number of years for usisl pro league
SELECT COUNT("Year") FROM table_73741 WHERE "League" = 'USISL Pro League'
SELECT COUNT("Year") FROM "table_73741" WHERE "League" = 'USISL Pro League'