pre_text: operating expenses operating expenses were $ 2.9 billion , an increase of 8% ( 8 % ) over 2000 . adjusted for the formation of citistreet , operating expenses grew 10% ( 10 % ) . expense growth in 2001 of 10% ( 10 % ) is significantly lower than the comparable 20% ( 20 % ) expense growth for 2000 compared to 1999 . state street successfully reduced the growth rate of expenses as revenue growth slowed during the latter half of 2000 and early 2001 . the expense growth in 2001 reflects higher expenses for salaries and employee benefits , as well as information systems and communications . o p e r a t i n g e x p e n s e s ( dollars in millions ) 2001 2000 1999 change adjusted change 00-01 ( 1 ) .
post_text: ( 1 ) 2000 results adjusted for the formation of citistreet expenses related to salaries and employee benefits increased $ 139million in 2001 , or $ 163millionwhen adjusted for the formation of citistreet . the adjusted increase reflects more than 2100 additional staff to support the large client wins and new business from existing clients and acquisitions . this expense increase was partially offset by lower incentive-based compensation . information systems and communications expense was $ 365 million in 2001 , up 20% ( 20 % ) from the prior year . adjusted for the formation of citistreet , information systems and communications expense increased 22% ( 22 % ) . this growth reflects both continuing investment in software and hardware , aswell as the technology costs associated with increased staffing levels . expenses related to transaction processing services were $ 247 million , down $ 21 million , or 8% ( 8 % ) . these expenses are volume related and include external contract services , subcustodian fees , brokerage services and fees related to securities settlement . lower mutual fund shareholder activities , and lower subcustodian fees resulting from both the decline in asset values and lower transaction volumes , drove the decline . occupancy expensewas $ 229million , up 15% ( 15 % ) . the increase is due to expenses necessary to support state street 2019s global growth , and expenses incurred for leasehold improvements and other operational costs . other expenses were $ 363 million , up $ 17 million , or 5% ( 5 % ) . these expenses include professional services , advertising and sales promotion , and internal operational expenses . the increase over prior year is due to a $ 21 million increase in the amortization of goodwill , primarily from acquisitions in 2001 . in accordance with recent accounting pronouncements , goodwill amortization expense will be eliminated in 2002 . state street recorded approximately $ 38 million , or $ .08 per share after tax , of goodwill amortization expense in 2001 . state street 2019s cost containment efforts , which reduced discretionary spending , partially offset the increase in other expenses . state street corporation 9 .
table: (Dollars in millions) 2001 2000 1999 Change 00-01 Adjusted Change 00-01(1)
table: Salaries and employee benefits $1,663 $1,524 $1,313 9% 11%
table: Information systems and communications 365 305 287 20 22
table: Transaction processing services 247 268 237 (8) (7)
table: Occupancy 229 201 188 15 16
table: Other 363 346 311 5 7
table: Total operating expenses $2,867 $2,644 $2,336 8 10
table: Number of employees 19,753 17,604 17,213 12
question: Analyse this data from a financial earnings document. what was the percent change in salaries and employee benefits between 1999 and 2000?