For the year ended December 31,

2017

2018

2019

Thousands USD

Total comprehensive loss

(17,503

)

(15,488

)

(8,353

)

Statutory tax rate

24

%

23

%

23

%

Theoretical tax benefit

(4,201

)

(3,562

)

(1,921

)

Increase in tax liability due to:

Non-deductible expenses

629

280

75

Losses and benefits for tax purposes for which no deferred taxes were recorded

3,572

3,282

1,846

Taxes on income

-