Routinely checking ESRL GHG measurements. Having followed for several years I find the curve different enough to post:
I get the impression that the curve illustrates an acceleration in the last months.
Mauna Loa shows it too, though less pronounced. See also the Nino years (’94, ’98,’04); there’s probably some correlation. Note also the steeper curve coinciding with the much worse summer sea ice melt since ’07.