2006: Before the financial crisis of 2008 the bank's Investment Banking Division ( Sales & Trading and Advisory & Underwriting Services) contributed roughly 60% to Deutsche Bank's total revenues.
2010: IB's contribution surged to a high of 62% with Sales & Trading desk contributing more than 50% of the bank's total revenues.
2014: Since 2011, DB has scaled back its trading business and has increased its focus on other stable revenue drivers. As evident from 2014 numbers, Deutsche Bank's IB contribution to total revenues plunged to 43%, with trading desk constituting about 34% to total revenues.
2018: IB division now accounts for roughly 36% of DB's total revenues while Trading division's contribution has been reduced to less than 30%.
Trefis projects this contribution to gradually decline to around 25% over the next few years.