Statements from our politicians proliferate as their relevance shrinks. 

Proliferate comes from French prolifération, from prolifère "producing offspring," from Latin proles "offspring" (see prolific) + ferre "to bear, carry" (from PIE root *bher- (1) "to carry," also "to bear children"). 

According to the Oxford English Dictionary (OED), the verb "proliferate" was first used in English in the 1860s. The OED lists 1866 as the earliest evidence for the adjective "proliferating," found in "Philosophical Transactions". 

Examples of "proliferate" and "proliferation" used in a sentence: 
"Stem cells are precursor cells that can proliferate, differentiate, and self-renew." 
"They also proliferate, multiplying to increase the response to the wound." 
"Cytokines are secreted proteins that induce cells to proliferate and differentiate." 
"Over the past 100 years, those flaws have proliferated as the use of the machine has spread across the world." 
"In these places, the plant proliferates and spreads fast."
"As the cells grow and proliferate, the team changes the recipe of the liquid nutrients to boost growth." 
Bruno worked at the Frosty Freeze ice cream shop until popular new frozen yogurt places started to proliferate all over town, putting his shop out of business."
"The past two years have seen the proliferation of TV channels." 
"The proliferation of wireless and broadband services is continuing."
"The Internet encouraged the proliferation of Web-only retail companies." 

1 hour ago, Bill W said:

According to the Oxford English Dictionary (OED), the verb "proliferate" was first used in English in the 1860s. The OED lists 1866 as the earliest evidence for the adjective "proliferating," found in "Philosophical Transactions".  
 

I am assuming that the reference to the Philosophical Transactions is to the world's first and longest-running scientific journal. Launched in 1665 (The year before the Great Fire of London) it is the scientific journal of the Royal Society of London. It can be said that their proliferate scientific reports since 1665 have caused even more research and discoveries to proliferate.

Just the facts:

PROLIFERATE Definition & Meaning - Merriam-Webster

PROLIFERATE in Thesaurus: All Synonyms & Antonyms