Later today, at about 4.30 PM ET, Apple will announce its financial earnings results for fiscal Q2, including the latest three-month sales numbers for iPhone, iPad and Mac.

Although Apple is still going to post profits in the billions, still one of the most successful companies the world by all metrics, investor expectations are low as the company guidance indicates it will report its first decline in year-over-year quarterly revenue since 2003. The primary cause? Falling iPhone sales …

Using data compiled by Philip Elmer-Dewitt (subscription required to see full article), analysts are expecting negative growth numbers across the board. In the same quarter of 2015, Apple reported $58 billion in revenue and $13.6 billion net profit derived from sales of 61.1 million iPhones, 12 million iPads and 4.5 million Macs.

Every single number on this sheet is expected to fall significantly in the Q2 2016 quarter aside from Macs. Elmer-Dewitt’s data suggests consensus of $52.2 billion revenue (a 10% decline), 51 million iPhones (a 15% decline), 9.9 million iPads (a 20% decline) with Mac sales constant at 4.5 million.

The revenue decline is particularly notable, as it’s the first time company revenue will decline YOY since 2003. Until now, booming sales of iPhones and iOS devices has pushed Apple’s revenue numbers to record levels every single year.

Apple Watch is new to the quarter, so there isn’t a year-over-year comparison. The data sheet indicates sales around the 3 million mark. However, this number is not verifiable as Apple does not disclose Apple Watch units revenue, bundling revenue contributions into an ‘Other Products’ category.