This can be explained by the larger than usual number of transactions effective just before the end of the temporary tax reduction period on 30 June 2021.
Gellir egluro hyn gan y nifer fwy nag arfer o drafodiadau oedd mewn grym ychydig cyn diwedd cyfnod y gostyngiad dros dro yn y dreth ar 30 Mehefin 2021.