The phrase "remained at the same rate" is correct and usable in written English.
You can use this phrase whenever you need to indicate that something has continued or persisted at its current rate. For example, "Over the past decade, the amount of rainfall in the region has remained at the same rate."
This fell steadily to 60% in 2009, and has remained at the same rate since.
We assumed that the slip deficit rate during 2007 2009 obtained by Ochi and Kato (2013) remained at the same rate after 2009 and superimposed the LSSE inferred by Ozawa et al. (2016) on it.
The Netherlands star has seen less of the ball and created fewer chances for others this season, but his shooting accuracy and chance conversion has remained at the same rate.
We compared neural activity associated with these dishes with the activity associated with 'neutral foods', those which remained at the same rating level across the sated and hungry sessions.
Now, if they can afford it, they are moving to 30-year fixed loans or ARM's that remain at the same rate for at least seven years.
Starting in 2015, this increase will level off, and remain at the same rate until 2020.
A final limitation is that the future cost of liver transplants is based on the assumption that transplantation will remain at the same rate as today.
The share of Capital Ones credit card loans 30 days or more past due remained at 5%, the same rate as February, according to its filing with the Securities and Exchange Commission.
Death rates from violence remained at the same level during the study period while death rates from other causes decreased.
In 2008, this rate remained at the same level of 11.2%.
When cases and controls were contributed by the two populations, the false positive rate remained at the same lower level for Methods 1 and 2 but increased up to 25% for Method 3.
