Copper production by country in metric tons. Dark blue (more than 2,000,000): Peru, Chile. Blue to light blue (200,000 to 2,000,000): Canada, U S A, China, Brazil. Very light blue (less than 200,000): most of Africa and Europe, most of South America.
Class | Rank | Metric tons | No data | Arid and low water use | Low (<10%) | Low-medium (10-20%) | Medium-high (20-40%) | High (40-80%) | Extremely high (>80%) | Class | Rank | People per square kilometer | Equatorial | Tropical | Subtropical | Temperate | Subpolar | Class | Rank | Global Index Score | Lightning Frequency | <0.1 flashes/km²/year | 0.1 flashes/km²/year | 0.2 flashes/km²/year | 0.4 flashes/km²/year | 0.6 flashes/km²/year | 0.8 flashes/km²/year | 1 flash/km²/year | 2 flashes/km²/year | 4 flashes/km²/year | 6 flashes/km²/year | 8 flashes/km²/year | 10 flashes/km²/year | 20 flashes/km²/year | 30 flashes/km²/year | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.654% | 3.65% | 47.2% | 4.86% | 6.22% | 9.97% | 14.9% | 0.242% | 3.16% | 0.792% | 1.40% | 2.08% | 24.4% | 16.4% | 8.63% | 6.27% | 9.50% | 4.67% | 3.58% | 14.1% | 25.7% | 10.1% | 11.3% | 14.8% | 42.6% | 30.6% | 47.1% | ||||||||||