CREATE TABLE table_45484 ("Year" FLOAT, "Australian Open" TEXT, "French Open" TEXT, "Wimbledon" TEXT, "US Open" TEXT)

What is the total number of years Andy Murray was at Wimbledon?
SELECT COUNT("Year") FROM table_45484 WHERE "Wimbledon" = 'andy murray'
SELECT COUNT("Year") FROM "table_45484" WHERE "Wimbledon" = 'andy murray'