Per year the volume is very low. Some years we have none at all. They also tend to be cleaned up quickly.
We have a world that rarely, if ever, has any spills! We would like a world with no spills, but we also would like to be alive in this world. Without fuel, we die.
Nature also spills oil. The tar pits are an example of natural seepage.
about 500 each year since it destroys aquatic life
It depends on the year.
This number is unknown as not all oil spills are reported, and many are not required to be reported under current legislation. The circumstances of the spill (indoors or out, contained or uncontained, in barren areas or in sensitive areas), the magnitude of the spills (drips or Mega liters), and the reporting jurisdictions requirements all affect reportability. Industrial associations and environmental agency data often provide spill numbers that meet their criteria.
more than a thousand each year
1000+
5
6,000
about 70 Americans per year
75,000 wildfires happen each year in the USA.
25,000
Around 10 at every circus a year
About 5 Million a year in the USA, and an estimated 20 Million in the world a year.