Youtube Subscribers

I am looking to attract more viewers and engage my existing audience through growing my Youtube channel's subscriber list. My type of Youtube channel is business/service related, and I currently have an existing base of subscribers. I am interested in growing my subscriber list by a minimum of 10-20% on a monthly basis. I am looking for an experienced expert in the field of Youtube growth and engagement to be the lead on this project.

Youtube subscribers increase to 20K