I have a question regarding these. Was there a change in the way the names were counted in 2011? Because suddenly names spelled without the accent suddenly rapidly declined in popularity or disappeared completely while the name with the accent rose. One example is
Josephine which was at #240 in 2010 and disappeared completely in 2011.
Joséphine magically appeared at #251 in 2011, out of nowhere. But what confuses me is that there is still data for
Josephine in 2014 at #394.
Thais is another example.
Thais was more popular even making the top 100. Then in the next two years it disappears. And
Thaïs rises quickly.
I wouldn't be confused if one name would just replace the other because then I would guess that they didn't count accents before. But the version without the accent always still exists or pops up later again.
Did tastes really change so quickly that so many people put an accent where they didn't put it before or is this a mistake/different way of counting them etc? Or do they now differentiate between names with accents and without and didn't before? I guess this must be the case. But it is kind of confusing how it is suddenly split.