Yeah. So you can see, Tom, right, that historically, our mainstream business was running for 10 years at about $250 million annually, we're in a mature market, there'd be a few percent of price down and regain, a few percent of market share. And as a result of that, our revenue is really remarkably stable. Leading the quarter, we're at $333 million run rate, and we're sold out throughout Asia. We're raising prices. We're nearly done. We're in the top half of the ninth inning raising prices in Korea and in Europe. So basically globally, with the exception of the US, we have double-digit price increases now in place everywhere. Typically, you hear us, we were around with one to two weeks worth of backlog. Mainstream right now, the backlog is two to three months. So we're operating at about a 25% deficit in our capacity to market demand. We're going to try to add - we won't be able to - given our - given the tools we can intelligently add this year, we'll get back - hope to get back most of that. They even get 15%, 20% back by the end of the year. Our expectations for growth and demand is we'll end the year in the same hole or a bigger one than we start, that's what we see in the market. So if we can get capacity up 15% to 20%, we still see the market leading us to have about a 25% deficit at year-end. And as I said in prior calls, right, we look back at the ASIC market, and when that market was booming, the photomask revenues to semiconductor revenues was running about 3%. The closest - where this business is most concentrated is China today, right. And when you look at that market right now, we see today photomask revenues are running about 2% of China silicon revenues. So it's double, that's double the photomask content of the global market. Right now, photomask, the semiconductor industries for the last 10 years have run 1%. China is running 2%, given our estimates what we see and we see the photomask market in China right now growing at about double, so about 25% the growth rate in the silicon market. So you kind of put all those things together and that's where our - that forms the mosaic that we see and view the market through. And when we look at our competitors, we see them doing the same thing. They are trying to add point tools, we don't think they're going to be more any - any more effective than we are at raising capacity. So there's a 25% to 30% deficit today. There's likely going to be a 25% to 30% deficit at the end of the year, that's kind of what we see. Even though we're all trying to cobble together point tools investments to raise output.