basic exmption limit

Dear Professionals,

If taxable value of services is 12 lac in year 2007-08. so
Service tax registration as well as service tax payment on 2 lac is required.
 right?

now in 2008-09, taxable value of services is 8 lac, then also service tax on 8 lac is require to pay as in the preceding fy taxable value was more then exemption limit.

now in 2009-10
 taxable value of services is 9 lac , he would not require to pay st on 9 lac, right?

if yes then if value of services is 11 lac in 2009-10 then what would be the leviability..?

pls reply