pre_text: NOTE 13. INCOME TAXES We calculate our provision for federal and state income taxes based on current tax law. U.S. federal tax reform (Tax Act) was enacted on December 22, 2017, and has several key provisions impacting the accounting for and reporting of income taxes. The most significant provision reduced the U.S. corporate statutory tax rate from 35% to 21% beginning on January 1, 2018. We remeasured the applicable deferred tax assets and liabilities based on the rates at which they are expected to reverse. As a result, the gross deferred tax assets and liabilities were adjusted which resulted in an expense for income taxes of $7.1 million which was fully offset by a corresponding change to our valuation allowance in 2017. The Tax Act contains several base broadening provisions that became effective on January 1, 2018, that did not have a material impact on 2018 and 2019 earnings. Deferred tax asset (liability) is comprised of the following (in thousands): We have determined it is more likely than not that our deferred tax assets will not be realized. Accordingly, we have provided a valuation allowance for deferred tax assets.
table: December 31
table: 2019 2018
table: Net operating loss carryforwards $7,672 $4,541
table: Stock options and warrants 420 214
table: Property 138 299
table: Intangible assets 66 94
table: Capitalized expenses 54 86
table: Other 210 164
table: Operating right-of-use lease assets (667)
table: Operating right-of-use lease liabilities 794
table: Net deferred tax assets 8,687 5,398
table: Less: Valuation allowance (8,687) (5,398)
table: Deferred tax asset (liability) $             - $             -
question: Analyse this data from a financial earnings document. What is the average net operating loss carryforward in 2018 and 2019?