According to data provided in the "Communications & Multimedia - Selected Facts & Figures" bulletin published by the Malaysian Communications and Multimedia Commission (MCMC, a.k.a. Suruhanjaya Komunikasi dan Multimedia Malaysia - SKMM), total amount of SMS sent out by cellular phones in Malaysia in 2007 is 56.8885 billion or 2,590 per subscription SIM card.
This means that on average, we sent out 7.1 SMS per day last year. If you sent out more than 7 SMS everyday, you are contributing more than average to the figure.
The graphs below show the growth of SMS amount sent over the years.
Assuming that each SMS is charged for 5 sen, this will be a hefty RM2.85 billion business for telco operator in 2007, which is still growing exponentially.