Please answer the given financial question based on the context.
Context: other items on our consolidated financial statements have been appropriately adjusted from the amounts provided in the earnings release , including a reduction of our full year 2016 gross profit and income from operations by $ 2.9 million , and a reduction of net income by $ 1.7 million. .
|( in thousands )|at december 31 , 2016|at december 31 , 2015|at december 31 , 2014|at december 31 , 2013|at december 31 , 2012|
|cash and cash equivalents|$ 250470|$ 129852|$ 593175|$ 347489|$ 341841|
|working capital ( 1 )|1279337|1019953|1127772|702181|651370|
|inventories|917491|783031|536714|469006|319286|
|total assets|3644331|2865970|2092428|1576369|1155052|
|total debt including current maturities|817388|666070|281546|151551|59858|
|total stockholders 2019 equity|$ 2030900|$ 1668222|$ 1350300|$ 1053354|$ 816922|
( 1 ) working capital is defined as current assets minus current liabilities. .
Question: what is the debt-to-asset ratio?


Answer: The answer is:0.22429