How much oil was produced in 2021?
According to Statista, global oil production amounted to 89.9 million barrels per day in 2021. This is a slight decrease from the 94.2 million barrels per day produced in 2019. The decline in production was due to the COVID-19 pandemic, which led to a decrease in demand for oil.

The top five producers of oil in 2021 were:
1. United States: 11.9 million barrels per day
2. Saudi Arabia: 10.7 million barrels per day
3. Russia: 10.6 million barrels per day
4. Canada: 4.8 million barrels per day
5. Iraq: 4.3 million barrels per day
That is per day, however how much oil was produced throughout the entire year of 2021?
Since $89,900,000$ barrels worth of oil was produced daily in 2021 according to Statista, for the whole year of 2021,

$89,900,000 * 365 = 32,813,500,000$ 

barrels worth of oil was produced.
Why do you count in barrels? Use the metric system like a good computer.