For the entire US, employment of bookkeeping, accounting, and auditing clerks is projected to grow by 10 percent during the 2008–18 decade. This occupation is one of the largest growth occupations in the national economy, with about 212,400 new jobs expected over the projections decade. Clerks who can carry out a wider range of bookkeeping and accounting activities will be in greater demand than specialized clerks. For example, demand for bookkeepers is expected to increase, because they can perform a wider variety of financial transactions, including payroll and billing.
Source: Bureau of Labor Statistics, U.S. Department of Labor, Occupational Outlook Handbook, 2010-11 Edition