There are around 3,500,000 English articles (versus 1,200,000 German ones, the next largest language). This isn't apparent in the graph as by default it has a

There are around 3,500,000 English articles (versus 1,200,000 German ones, the next largest language). This isn't apparent in the graph as by default it has a logarithmic scale; you can set it to linear, try it and see.