Please answer the given financial question based on the context.
Context: the fair value of our total investments increased $ 4.8 billion during 2010 , primarily due to unrealized appreciation , the inves- ting of operating cash flows , and the portfolios acquired in the 2010 corporate acquisitions . the following tables show the market value of our fixed maturities and short-term investments at december 31 , 2010 and 2009 . the first table lists investments according to type and the second according to s&p credit rating. .
|( in millions of u.s . dollars except for percentages )|2010 market value|2010 percentage of total|2010 market value|percentageof total|
|treasury|$ 2075|4% ( 4 % )|$ 2068|5% ( 5 % )|
|agency|2015|4% ( 4 % )|2698|6% ( 6 % )|
|corporate and asset-backed securities|15900|33% ( 33 % )|13537|30% ( 30 % )|
|mortgage-backed securities|12362|25% ( 25 % )|11311|25% ( 25 % )|
|municipal|2449|5% ( 5 % )|2300|5% ( 5 % )|
|non-u.s .|12199|25% ( 25 % )|11172|25% ( 25 % )|
|short-term investments|1983|4% ( 4 % )|1667|4% ( 4 % )|
|total|$ 48983|100% ( 100 % )|$ 44753|100% ( 100 % )|
|aaa|$ 23718|48% ( 48 % )|$ 22884|51% ( 51 % )|
|aa|4714|10% ( 10 % )|4021|9% ( 9 % )|
|a|8482|17% ( 17 % )|7461|17% ( 17 % )|
|bbb|5487|11% ( 11 % )|4910|11% ( 11 % )|
|bb|3357|7% ( 7 % )|2866|6% ( 6 % )|
|b|2393|5% ( 5 % )|2029|5% ( 5 % )|
|other|832|2% ( 2 % )|582|1% ( 1 % )|
|total|$ 48983|100% ( 100 % )|$ 44753|100% ( 100 % )|
.
Question: what is the percentage change in the balance of short-term investments in 2010?


Answer: The answer is:0.18956