Last year sometime around August, the CDC reported that only 6% of the deaths were due to Covid only. The rest all had co-morbidities.
Additionally, death from all causes had increased by about 5% so a good estimate would be 5%-6%.
That’s not what the CDC actually said. The CDC statement you’re referring to was with regards to how some death certificates were filled out. In short, where COVID-19 is listed on the last line of Section 32 Part I of a US Standard Certificate of Death, COVID-19 was the Underlying Cause of Death (UCoD) and the death is listed as COVID-19 in the statistics. You don’t die of multiple things. The other items listed in Section 32 Part I are all a consequence of the UCoD. That includes ARDS, pneumonia, hypoexmia, etc. Anything listed in Section 32 Part II may complicate survival, but they are NOT the cause of death. A person may live for decades with diabetes or hypertension. If they get COVID-19, those decades may be reduced to days or weeks because of COVID-19. Diabetes and hypertension can make it more difficult for the person to survive COVID-19, but they were on track to live many years later until COVID-19 came along and killed them. And yes, their deaths matter.
But I’m glad you brought up the increase in the total number of deaths. Unfortunately, you’ve got the wrong number. It isn’t 5%; it’s an over 18% increase from 2019:
Number of deaths in the US in 2018: 2,839,205 (https://www.cdc.gov/nchs/products/databriefs/db355.htm)
Number of deaths in the US in 2019: 2,854,838 (https://www.cdc.gov/nchs/products/databriefs/db395.htm)
Number of deaths in the US in 2020: 3,389,700 (https://www.cdc.gov/nchs/nvss/vsrr/COVID19/index.htm)
So in 2020, there was an increase of 534,862 total deaths. You’ll notice that from 2018 to 2019, there was a 0.5% increase in total deaths in the United States. The normal range is 0.3% - 0.7%. In 2020, there was an 18.7% increase over 2019. That’s unheard of outside of incredibly extreme situations. Like World War II.