Answer by taking a quote from the following article:

Michael Martin Murphey was born on March 14, 1945, to Pink Lavary Murphey and Lois (nee Corbett) Murphey, in the Oak Cliff section of Dallas, Texas, where he grew up. He has a brother Mark who is three years younger. When he was six years old, he started riding horses on his grandfather's and uncle's ranches.

In 1982, Murphey signed with Liberty Records and produced two original albums, Michael Martin Murphey and The Heart Never Lies, as well as a compilation of re-recorded versions of his A&M, Epic, and Liberty hits called The Best of Michael Martin Murphey.  In the early 1980s, Murphey had significant commercial success with hits like "Still Taking Chances", "Disenchanted", "Don't Count the Rainy Days", "Will It Be Love by Morning", "Radio Land", "Maybe This Time", and the number one hit "What's Forever For", written by Rafe VanHoy, which also crossed over to number three at AC Radio and number nineteen on the Billboard Hot 100 Pop Singles Chart. In 1983, Murphey was voted Best New Male Vocalist of the Year by the Academy of Country Music. In 1985, his rerecorded version of "Carolina in the Pines" reached the Top 10.  In 1985, Murphey signed a new recording contract with Warner Bros. Records and continued his streak of successful recordings. In 1986, he released the album Tonight We Ride, which included "Rollin' Nowhere", "Fiddlin' Man", and "Sante Fe Cantina". In 1987, he released the album Americana, which included "Once Upon a Time", "My Darling Wherever You Are", and another number one country hit with the song "A Long Line of Love". That same album produced the hit single "A Face in the Crowd" with Holly Dunn, which was nominated for a Grammy Award.  In 1988, Murphey released the album River of Time, which produced three hit singles that reached number three on the charts: Jesse Winchester's "I'm Going to Miss You, Girl", his own "From the Word Go", and "Talkin' to the Wrong Man", which featured his son Ryan. In 1989, Murphey closed out a successful decade of recording with the album Land of Enchantment, which contained "Never Givin' Up on Love", "Got to Pay the Fiddler", "Route 66", and "Land of Enchantment", which became New Mexico's state ballad.

How many copies were sold ?