Type A was 10% only in year 2007 where as it was rised up to 20% in year 2008.
But i try .;t really understand what is your request .
As for type B was 24% in year 2007 and increased to 25% in year 2008.
Apparently , we can see both were produced a good result, but it seems that type A is better than B due to 100% of upgrading in it'.. i don'.
There are two types of customer service level to show in this table..Hm;s figure with in a year