note 1
Table:
undergraduate degree
graduate degree

unadjusted gap
adjusted gap
unadjusted gap
adjusted gap

model a
model b
model a
model b

percent

cohort

2006
-1.9
-1.8
-0.6
-5.8
-3.7
1.7

2007
-0.5
0.6
0.7
-15.8
-13.1
-8.2

2008
..
..
..
..
..
..

2009
-7.6
-7.3
-7.8
-9.8
-8.1
-9.4

2010
-7.7
-7.2
-10.0
-13.6
-9.8
-8.4

2011
-10.1
-8.5
-11.1
-3.2
2.1
0.5

Answer the given question as concisely as possible using information from the table. Format your answer like this: {"answer": ["YOUR ANSWER"]}. If multiple items are correct, separate them with commas. The table is captioned 'note 1'. Refer to the table to answer the question below: Even after taking demographic and field of study differences into account, how many percent of undergraduate students who graduated in 2009 earned is less than those who graduated in 2008?

{"answer": ["8.1"]}