The phrase "availability has improved" is correct and usable in written English.
You can use it when discussing enhancements or positive changes in the accessibility or presence of a service, product, or resource.
Example: "Since the new system was implemented, the availability has improved significantly, allowing more users to access the service without delays."
Alternatives: "accessibility has increased" or "resource availability has enhanced."
In the aftermath of the credit crunch, the mortgage market is now functioning more effectively - the availability of funding has improved, and there is greater competition, choice and access for mortgage customers.
According to the latest data from 2012, the availability of doctors has improved in our study states, but is still deficient.
The availability of ART has improved over time, but the impact on population-level mortality may still take some time to observe.
The recent availability of rituximab has improved the EFS, progression-free survival (PFS) and overall survival of patients with B-cell non-Hodgkin's lymphoma.
And these services, along with the voluntary efforts of community groups in the camps, have rendered fruitful results - no cases of cholera or Acute Watery Diarrhoea (AWD) have been reported, the number of households with access to latrines has increased, and the availability of water has improved.
"It has never been easier to be vegan," says Pierson. "The availability of vegan food has improved significantly, with more products now stocked in mainstream supermarkets which had, in the past, been available only in specialist health-food stores.
For example, the rise of the Indian biotechnology industry has improved availability of vaccines and programs like the Grand Challenges in Global Health Initiative funded by the Bill and Melinda Gates Foundation provide hope for upstream discovery science against global health problems.
The introduction of the long-playing record changed the situation and the invention of the compact disc has improved availability to an extent undreamed of even a few years ago.
