With the door just about to close on 1999, the folks at "Billboard" have tallied up a year's worth of chart action and Cher and the Backstreet Boys have come out on top.Cher's previously ubiquitous dance track "Believe" tops the "Billboard" year-end singles chart, earning the honor of the number one song of 1999. TLC's summer smash "No Scrubs" lands at number two for the year, while Monica's "Angel Of Mine," Whitney Houston's "Heartbreak Hotel," and Britney Spears' "Baby One More Time" round out the top five of '99. Sixpence None The Richer, Christina Aguilera, Sugar Ray, Deborah Cox, and Ricky Martin also made the year-end singles chart. Meanwhile, it was all about the Backstreet Boys on the "Billboard" year-end album chart. The group's "Millennium" proved to be the biggest selling album of the year, scoring the number one spot on the '99 chart. One of Backstreet's teen pop colleagues comes close behind as Britney Spears' "Baby One More Time" album was '99's number two seller. Country crossover star Shania Twain, teen dreams "NSYNC, and the aforementioned Ricky Martin round out '99's top five, while Garth Brooks, the Offspring, the Dixie Chicks, Limp Bizkit, and TLC make up the back end of the top ten. With an eye on both charts, the folks at "Billboard" also compiled their list of the top five pop artists of 1999, with the Backstreet Boys again coming out on top. TLC is at number two, while Britney, Shania and Ricky round out the list. In the rock world, it proved to be a big year for Lit as the California outfit scored the year's number one modern rock track with "My Own Worst Enemy." Everlast's seemingly inescapable "What It's Like" is the year's runner-up, while the Red Hot Chili Peppers, Blink-182, and Sugar Ray all reached the top five. Creed, Cake, Orgy, Smash Mouth, and Fatboy Slim see their familiar tracks cap off the year's modern rock top ten.