Table:
first quarter
second quarter
third quarter
fourth quarter

millions of dollars

gross domestic product at market prices
2,194,432
2,214,392
2,238,188
2,223,144

of which: cannabis-related
6,620
7,139
7,692
8,636

of which: other
2,187,812
2,207,253
2,230,496
2,214,314

percentage change

gross domestic product at market prices
0.5
0.6
0.8
0.1

of which: cannabis-related
5.2
7.6
6.2
10.7

of which: other
0.5
0.6
0.7
0.1

Statement: cannabis-related expenditures including inventory changes accounted for 0.4% of gdp in the fourth quarter.
Question: what is the ratio of cannabis-related expenditures including inventory changes to gdp in the fourth quarter?
Answer: [0.003885]