I buy more than nine games per year, but I wouldn't say that buying them takes all of my money. I like my games as much as the next guy, but I've got a life and family outside of gaming as well. I usually hit up the local bargain bins and flea markets every other month or so, so I can pick up more games than someone who just buys the newest $50 game.
I've been playing games for just under fifteen years and currently own about
237 games. Which means, on average, I get 15 or 16 games a year. Though truth be told, my buying rate has accelerated several times over since the PS2 launched -- I used to rent most of my games before then. (This month [August] alone I've picked up seven games.)
EDIT (8/3): Games purchased this year:
GameCube
Final Fantasy: Crystal Chronicles
Metal Gear Solid: The Twin Snakes
Sonic Heroes
Star Fox Adventures
Super Monkey Ball
Nintendo 64
Mortal Kombat Trilogy
PlayStation
Armored Core: Master of Arena
Armored Core: Project Phantasma
Crash Bandicoot 3: Warped
Final Fantasy: Anthology
Final Fantasy: Chronicles
Gran Turismo
Gran Turismo 2
Koudelka
The Legend of Dragoon
Mega Man Legends
Mega Man X7
Metal Gear Solid
Metal Gear Solid: VR Missions
SaGa Frontier II
Xenogears
PlayStation 2
.Hack Part 1: Infection
.Hack Part 2: Mutation
.Hack Part 3: Outbreak
.Hack Part 4: Quarantine
Arc the Lad: End of Darkness
Armored Core 2
Armored Core 2: Another Age
Armored Core 3
Armored Core: Nexus
God of War
Gran Turismo 3: A Spec
Gran Turismo 4
Metal Gear Solid 2: Substance
Midnight Club
Silent Line: Armored Core
Star Ocean: Till the End of Time
Suikoden III
Suikoden IV
Tom Clancy's Splinter Cell Pandora's Tomorrow
Unlimited SaGa
Wild Arms 3
Xenosaga Episode II
Sega Genesis
Streets of Rage
Super Nintendo
The Legend of Zelda: A Link to the Past
Xbox
Soul Calibur II
... I take back my earlier statement; I don't have a life.