"As of 31 December 2017, there were 121,542 highway legal light-duty plug-in electric vehicles registered in the Netherlands"
https://en.wikipedia.org/wiki/Plug-i...he_Netherlands
"There were 8.1 million cars in the Netherlands in January 2016"
https://www.cbs.nl/-/media/_pdf/2016...d-mobility.pdf
There were 382,514 cars sold in 2016 and 414,538 sold in 2017:
https://www.statista.com/statistics/...e-netherlands/
I do not have any idea how many vehicles have been retired in those two years, but 121,542 / 8,897,052 = 1.366%.