Staffing Size for Web Team?

Can anyone offer me some guidance on how many people are employeed in your web and/or emarketing department.

I work for a large global company and I'm the sole person responsible for maintaining our website along with overseeing email marketing campaigns. And in addition, I'm tasked with many smaller time consuming tasks.

I am trying to build a case for additional employees/resources to help create a solid web/emarketing team, but I don't have any information to back up my request.

Getting some information about the number of employees that make up a web team or emarketing team in other companies along with a list of associated job titles/functions would help me build a better case by knowing what other companies are doing.

Any information or help would be appreciated.

Thanks!