Great albums are recorded and released every year, but I can make a very strong argument that 1972 saw more truly great albums released than any year before or since.
To be more precise, I can make dozens of very strong arguments. I'll start with five.
"Amazing Grace" by Aretha Franklin. "Exile On Main Street" by the Rolling Stones. "Talking Book" by Stevie Wonder (whose similarly classic "Music of My Mind" album came out earlier the same year.) "The Rise And Fall of Ziggy Stardust And The Spiders From Mars" by David Bowie. "Sail Away" by Randy Newman.