Calculating Operating Net Working Capital Hildebrand Corp. had the following current asset and current liability account balances for 2012 through 2015:

In Millions of Dollars	2015	2014	2013	2012
Cash and equivalents	$807,926	$560,960	$617,866	$658,255
Short-term investments	178,994	197,408	182,442	614,513
Cash and short-term investments	986,920	758,368	800,308	1,272,768
Accounts receivable	2,028,060	2,365,823	2,341,609	2,302,447
Inventories	1,456,271	1,441,024	1,450,258	1,262,308
Total current assets	4,471,251	4,565,215	4,592,175	4,837,523
Accounts payable	1,138,770	1,601,413	1,584,959	1,416,367
Accrued expenses	878,454	901,546	902,164	863,683
Notes payable/short-term debt	1,038,633	789,285	979,675	821,126
Current portion of long-term debt	531,635	386,879	303,214	248,028
Total current liabilities	$ 3,587,492	$ 3,679,123	$ 3,770,012	$ 3,349,204

Compute Hildebrands operating net working capital for 2012 to 2015.

What are the annual changes in operating net working capital for 20132015?

Analyze the firms needs for additional capital to support its need for operating working capital.