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Daily Data InsightsOil spills from tankers have fallen by more than 90% since the 1970s

Oil spills from tankers have fallen by more than 90% since the 1970s

Bar chart showing a decline in oil spills since the 1970s.

In the 1970s, oil spills from tankers — container ships transporting oil — were common. Between 70 and 100 spills occurred per year. That’s one or two spills every week.

This number has fallen by more than 90% since then. In the last decade, no year has had more than eight oil spills, as shown in the chart.

The quantity of oil spilled from tankers has also fallen dramatically. Over the last decade, the average is less than 10,000 tonnes per year, compared to over 300,000 tonnes in the 1970s.

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