The phrase "a steady decrease in the number" is correct and usable in written English.
It can be used when discussing trends or changes in quantities over time, particularly in statistical or analytical contexts.
Example: "The report indicated a steady decrease in the number of participants over the last five years."
Alternatives: "a consistent decline in the number" or "a gradual reduction in the number."
There has been a steady decrease in the number of practitioners who can attend network meetings and help plan and support its activities, such as an annual event that gives BME carers invaluable information and much needed respite.
KMPT said that since June 2016 there had been a steady decrease in the number of patients in private beds, and now the trust has no inpatients in out-of-area beds.
Their results indicated a steady decrease in the number of unique tags over time, suggesting an increasing stability in the community vocabulary and the establishment of domain-specific vocabulary.
In the U.S. and abroad, expanded availability of HIV screening programs and treatment to prevent perinatal transmission of HIV from mother to child has led to a steady decrease in the number of children living with HIV.
Overall, the plate counts showed a steady decrease in the number of colony forming units of E. coli in the presence of 5 µg/ml of gentamicin.
A steady decrease in the number of oocytes was observed in both PCNA RNAi and control ovaries with the extension of culture (Fig. 6B).
A steady decrease in cell number was then observed, with outgrowth of clones occurring in only a small minority of all culture flasks.
Radiolarian species diversity data show a steady decrease in diversity throughout the late Carnian to middle Norian.
Although serotype 6A is included in PCV13, steady decreases in the number of 6A and 6B isolates observed since 1999 2000 suggest cross-reactivity of the 6B Pcomponentnent against 6A strains.
A steady decrease in MSF incidence has been recorded during the last decade in Romania.
