Clock differs with values from the original MCC clock

[moredatapls]

Investigate why the clock values differ: https://www.mcc-berlin.net/fileadmin/data/clock/carbon_clock.htm

[moredatapls]

MCC Berlin uses the updated value from 2018, while the original dataset only contains values up to 2017 (http://www.globalcarbonatlas.org/en/CO2-emissions). There seems to be no per-country dataset available for 2018...