SQL 2012 :: Normalization Database Tables

I have decided to use Wufoo online forms so collect evaluation data from my clients. Each form will have different type of data.

For example

Form 1 might have:
Client id, name, user id, comments

Form 2 might have:
Client id, name, user id, address, comments, telephone number

Form 3 might have:
Client id, name, user id, comments, date of birth, email address

Each form can have over 20+ data types which can be all different to other forms.My question is: What is the best way to store all the data into sql server without creating new columns of new data types everytime a new form is created in wufoo.