ASTD estimates that U.S. organizations spent $125.88 billion on employee learning and development in 2009. This amount reflects direct learning expenditures such as the learning function's staff salaries, administrative learning costs, and non-salary delivery costs (including outsourced activities). Nearly two-thirds of the U.S. total ($78.6 billion) was spent on the internal learning function, such as staff salaries and internal development costs. The remainder ($47.3 billion) was allocated to external services such as workshops, vendors and external events.
These types of informative statistics appear in ASTD's annual State of the Industry Report.
Check it out: http://www.astd.org/content/research/stateOfIndustry.htm