It's still a serious problem, but it seems like the $1 trillion outflow number is the authors' projection for the next year, based on their estimate of accelerating Q2 outflows.
Regarding the past year, the article simply says that "the cumulative capital outflow over the past five quarters [is] $520bn."
Re:China stocks drop over 8%
by nazgulnarsil on Monday July 27, 2015 @04:30PM
(#9957800)
foreign exchange reserve and capital outflow are not additive like that AFAIK.
EDIT: meant to say 'next year', not 'last year'