pre_text: Uncertain Tax Positions As of December 31, 2019, 2018 and 2017, we had gross unrecognized tax benefits of $4.4 million, $4.2 million
  and $3.8 million, respectively. Accrued interest expense related to unrecognized tax benefits is recognized as part of
  our income tax provision in our consolidated statements of operations and is immaterial for the years ended
  December 31, 2019 and 2018. Our policy for classifying interest and penalties associated with unrecognized income
  tax benefits is to include such items in income tax expense. The activity related to the unrecognized tax benefits is as follows (in thousands): These amounts are related to certain deferred tax assets with a corresponding valuation allowance. As ofDecember 31, 2019, the total amount of unrecognized tax benefits, if recognized, that would affect the effective taxrate is $1.0 million. We do not anticipate a material change to our unrecognized tax benefits over the next twelvemonths. Unrecognized tax benefits may change during the next twelve months for items that arise in the ordinarycourse of business. We are subject to taxation in the United States, various states, and several foreign jurisdictions. Because we havenet operating loss and credit carryforwards, there are open statutes of limitations in which federal, state and foreigntaxing authorities may examine our tax returns for all years from 2005 through the current period. We are notcurrently under examination by any taxing authorities.
table: Years Ended December 31,
table: 2019 2018 2017
table: Gross unrecognized tax benefits —beginning balance $4,191 $3,782 $3,360
table: Increases (decrease) related to tax positions from prior years (280) (266) (151)
table: Increases related to tax positions taken during current year 530 675 573
table: Decreases related to tax positions taken during the current year — — —
table: Gross unrecognized tax benefits —ending balance $4,441 $4,191 $3,782
question: Analyse this data from a financial earnings document. What is the total increases related to tax positions taken during current year in 2018 and 2019?