The paper apparently learned this from two sources with knowledge of the figures.
The New York Times is one of the major newspapers that opted out of the service because its own digital subscription business is the envy of the publishing industry. The Washington Post did not join the effort either despite “intense lobbying from Apple.”

Apple has, however, managed to persuade Rupert Murdoch to offer The Wall Street Journal content through Apple News+ sans certain sections and archives older than 3 days. The Los Angeles Times is another major newspaper that participates in Apple News+.
Previously, Apple was trying to push digital publications through Newsstand, the now defunct stock app that was supposed to bring together digital publications in one place. But Newsstand failed miserable because it was simply dedicated to downloading and displaying digital versions of newspapers and magazines, most of them PDFs packaged as apps.

In fact, even though Apple used to refer to Newsstand as an app, it was actually a special folder with individual apps of newspapers and magazines inside. Following the initial release in October 2011, Newsstand received its final update with the iOS 8.4.1 software update in August 2015 before being replaced altogether by iOS 9’s News app the following year.
But that didn’t discourage Apple from bringing quality curated journalism to its user base. And to help with that effort,it acquired Texturein 2018 for an undisclosed sum.

As you may have heard, Texture provided readers with an all-you-can-eat access to some 200 publications with a single monthly subscription. Apple’s service includes more than 300 titles including The New Yorker, Vanity Fair, Vogue, Time, The Atlantic and People.
On top of that, your Apple News+ subscription includes access to publications like Airbnb Magazine, Birds & Blooms, Retro Gamer and Salt Water Sportsman, as well as premium online publications such as theSkimm, The Highlight by Vox, New York Magazine’s sites Vulture, The Cut and Grub Street and Extra Crunch from Verizon Media’s TechCrunch.

Apple News+ is available in the US for ten bucks per month and in Canada for $13 per month. It requires an iPhone or iPad with iOS 12.2+ or a Mac running macOS 10.14.4 or higher.
Thanks to Family Sharing, up to six family members can share one Apple News+ subscription. The service will be available in the United Kingdom and Australia later this year.