Not sure where you got these statistics, but as far as I can see the rate is more like 0.3%.
That death rate would be higher if the vaccination rates were lower.
No, it would not. The percentage of deaths is determined by the health/environmental factors of the infected population. Once the disease is contracted, being vaccinated or not makes no difference as vaccination is not a treatment and has no effect on the course of the disease. The raw numbers would naturally increase with the increased number of infections, but the death percentage would remain unchanged.
Measles also causes miscarriage, premature birth and low birth weight.
I heard it also causes global warming....
Yes, lower vaccination rates would cause higher death rates. Most of the deaths are in infants under the age of first vaccination. The younger the infant the higher the risk of serious complications and death.
If more of the general population is not vaccinated, then more pocket epidemics will occur and more infants will be exposed and more infants will contract the disease and at high risk for serious complications.
The whole point of immunizations is herd immunity, not individual immunity. By stopping epidemics in school age children, who are at low risk of complications, we stop them from taking the disease home to infant siblings, pregnant mothers and elderly or sickly family members in the home, all at higher risk for complications and death.
You are also not recognizing the fact that a vaccination is much cheaper than hospitalization for encephalitis or pneumonia. Pediatric ICU is cubic money and deeply traumatizing for the infant.