Kosei Popularity by Year
Follow Kosei across every available national year. Rankings and birth counts remain separated by the source dataset’s girl and boy categories.
Kosei birth-count history
The chart samples long histories for faster loading. The complete table below includes every recorded year.
Complete year-by-year record
| Year | Category | Births | Rank | Change from previous recorded year |
|---|---|---|---|---|
| 2020 | Boys | 7 | #9,554 | Up 2,591 places |
| 2019 | Boys | 5 | #12,145 | Down 1,385 places |
| 2018 | Boys | 6 | #10,760 | Up 1,425 places |
| 2016 | Boys | 5 | #12,185 | Down 77 places |
| 2014 | Boys | 5 | #12,108 | Down 1,380 places |
| 2013 | Boys | 6 | #10,728 | Up 1,546 places |
| 2012 | Boys | 5 | #12,274 | Up 13 places |
| 2011 | Boys | 5 | #12,287 | Down 1,521 places |
| 2010 | Boys | 6 | #10,766 | Up 228 places |
| 2009 | Boys | 6 | #10,994 | Down 2,670 places |
| 2008 | Boys | 9 | #8,324 | Up 3,731 places |
| 2006 | Boys | 5 | #12,055 | Down 699 places |
| 2004 | Boys | 5 | #11,356 | Down 462 places |
| 2003 | Boys | 5 | #10,894 | Down 227 places |
| 2002 | Boys | 5 | #10,667 | Down 318 places |
| 2000 | Boys | 5 | #10,349 | — |