Explain one likely reason for Canada's balance of trade in goods and services over the period shown. Refer to the table and chart below in your answer.
Figure 3: Canada's net monthly balance of trade in goods and services, January 2018 to January 2022

| Year | Net Balance (CAD billions) |
|---|---|
| Jan 2018 | -2.3 |
| Jan 2019 | -1.8 |
| Jan 2020 | -1.5 |
| Jan 2021 | -1.0 |
| Jan 2022 | -2.5 |