State of the Union: History of the President's Guests | Time

 Over time, as the message content changed, the focus of the State of the Union also changed:

President of the European Union - Wikipedia

Every year in September, the President of the European Commission delivers his State of the Union speech before the European Parliament, taking stock of the achievements of the past year and presenting priorities for the year ahead. The President also sets out how the Commission will address the most pressing challenges the European Union is facing. The speech is followed by a plenary debate. This kick-starts the dialogue with Parliament and Council to prepare the Commission Work Programme for the following year.

A text mining Analysis of the State of the Union Address of USA presidents.

State of the Union Trivia and History ..

Anchored in the Treaty of Lisbon, the State of the Union address is foreseen in the 2010 Framework Agreement on relations between the European Parliament and the European Commission, which also foresees that the President sends a letter of intent to the President of the European Parliament and the Presidency of the Council that sets out in detail the actions the Commission intends to take by means of legislation and other initiatives until the end of the following year (2018 in this case).

History, Art & Archives, U.S. House of Representatives, “State of the Union Address,” (March 08, 2018)

Including President Donald J. Trump’s 2018 address, there have been a total of 95 Annual Messages/State of the Union Addresses. Since President Woodrow Wilson’s 1913 address, there have been a total of 83 in-person addresses.

This Is Why U.S. Presidents Started Name-Dropping Their State of the Union Guests