liquidity and capital resources .

1999
Change
1998
Change
1997
Cash, cash equivalents, and short-term investments
$498.7
83%
$272.5
(46)%
$503.0
Working capital
$355.4
73%
$205.0
(55)%
$454.3
Stockholders' equity
$512.2
(0.8)%
$516.4
(28)%
$715.4

our cash , cash equivalents , and short-term investments consist principally of money market mutual funds , municipal bonds , and united states government agency securities .
all of our cash equivalents and short-term investments are classified as available-for-sale under the provisions of sfas 115 , 2018 2018accounting for certain investments in debt and equity securities . 2019 2019 the securities are carried at fair value with the unrealized gains and losses , net of tax , included in accumulated other comprehensive income , which is reflected as a separate component of stockholders 2019 equity .
our cash , cash equivalents , and short-term investments increased $ 226.2 million , or 83% ( 83 % ) , in fiscal 1999 , primarily due to cash generated from operations of $ 334.2 million , proceeds from the issuance of treasury stock related to the exercise of stock options under our stock option plans and sale of stock under the employee stock purchase plan of $ 142.9 million , and the release of restricted funds totaling $ 130.3 million associated with the refinancing of our corporate headquarters lease agreement .
other sources of cash include the proceeds from the sale of equity securities and the sale of a building in the amount of $ 63.9 million and $ 40.6 million , respectively .
in addition , short-term investments increased due to a reclassification of $ 46.7 million of investments classified as long-term to short-term as well as mark-to-market adjustments totaling $ 81.2 million .
these factors were partially offset by the purchase of treasury stock in the amount of $ 479.2 million , capital expenditures of $ 42.2 million , the purchase of other assets for $ 43.5 million , the purchase of the assets of golive systems and attitude software for $ 36.9 million , and the payment of dividends totaling $ 12.2 million .
we expect to continue our investing activities , including expenditures for computer systems for research and development , sales and marketing , product support , and administrative staff .
furthermore , cash reserves may be used to purchase treasury stock and acquire software companies , products , or technologies that are complementary to our business .
in september 1997 , adobe 2019s board of directors authorized , subject to certain business and market conditions , the purchase of up to 30.0 million shares of our common stock over a two-year period .
we repurchased approximately 1.7 million shares in the first quarter of fiscal 1999 , 20.3 million shares in fiscal 1998 , and 8.0 million shares in fiscal 1997 , at a cost of $ 30.5 million , $ 362.4 million , and $ 188.6 million , respectively .
this program was completed during the first quarter of fiscal 1999 .
in april 1999 , adobe 2019s board of directors authorized , subject to certain business and market conditions , the purchase of up to an additional 5.0 million shares of our common stock over a two-year period .
this new stock repurchase program was in addition to an existing program whereby we have been authorized to repurchase shares to offset issuances under employee stock option and stock purchase plans .
no purchases have been made under the 5.0 million share repurchase program .
under our existing plan to repurchase shares to offset issuances under employee stock plans , we repurchased approximately 11.2 million , 0.7 million , and 4.6 million shares in fiscal 1999 , 1998 , and 1997 , respectively , at a cost of $ 448.7 million , $ 16.8 million , and $ 87.0 million , respectively .
we have paid cash dividends on our common stock each quarter since the second quarter of 1988 .
adobe 2019s board of directors declared a cash dividend on our common stock of $ 0.025 per common share for each of the four quarters in fiscal 1999 , 1998 , and 1997 .
on december 1 , 1997 , we dividended one share of siebel common stock for each 600 shares of adobe common stock held by stockholders of record on october 31 , 1997 .
an equivalent cash dividend was paid for holdings of less than 15000 adobe shares and .

Question: Analyse this data from a financial earnings document. what is the average purchase price of shares purchased during 1999?
Choices:
4.70588
0.01471
-17.94118
51.85
17.94118
Correct choice index: 4