I'd also add that the very popular New King James Version (NKJV) is both copyrighted and uses different source material from the KJV which means that differences in wording are not just old to new English, but also differences in meaning.
Does anybody actually keep statistics on this? I’ve never seen it used, and I’ve been to probably 15 different churches in 2 geographical regions. Most of the churches I got to say avoid anything new and copyrighted. So no I don’t have citation but I ask you for the same. Let’s see some citation that both NIV and NKJV are the most popular.