Don't Shoot Me... was EJ's 8th LP?
According to Allmusic it was actually his 9th, but I'm guessing Bob wasn't counting that soundtrack in '70 (which I'd never heard of until now). Even if you don't count it, he put out 12 albums in under 7 years.
1969 Empty Sky
1970 Elton John
1970 The Games [Original Soundtrack]
1971 Tumbleweed Connection
1971 Friends
1971 11-17-70 [live]
1971 Madman Across the Water
1972 Honky Chateau
1973 Don't Shoot Me I'm Only the Piano Player
1973 Goodbye Yellow Brick Road
1974 Caribou
1975 Captain Fantastic and the Brown Dirt Cowboy
1975 Rock of the Westies