Ok found the other bit of paper I was looking for!
Development of speech sounds
Most vowels, p b t d m n w - 50% of 1.5 to 2 year olds can pronounce , and 90% of 3 year olds
K g ng f s h y - 50% of 2.5 to 3 year olds can pronounce , and 90% of 4 year olds
L - 50% of 3 to 3.5 year olds can pronounce, 90% of 6 year olds
V z sh ch dg - 50% of 3.5 to 4.5 year olds can pronounce, 90% of 6 year olds
Th the zh r - 50% of 4.5 to 5 year olds can pronounce, 90% of 7 year olds
Clusters
Beginning of word: bl cl fl br cr dr gr and end of word kl ls ms ps - 50% of 4 to 4.5 year olds can pronounce, 90% of 6 year olds
Sp sm st sl sw - 50% of 4 to 4.5 year olds can pronounce, 90% of 7 year olds
Str skr spl thr shr - 50% >5 year olds can pronounce, 90% of 7-8 year olds
Hope that makes sense. You can see how normal it is to have only completely developed speech sounds up to about age 8! I sure felt better after reading this table.
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