Selected data (in thousands) from the income statement of JTI Inc. are shown below. Using vertical analysis, calculate the percentage of the base amount for each year.

___________________________2018...................2017

Net sales..............................$1,914...............$2,073

Cost of goods sold................1,612.................1,674

Gross profit..............................302....................399

Operating expenses..................218....................210

Income before income tax.........84....................189

Income tax expense...................17......................38

Net income.............................$ 67..................$ 151