The phrase "an annual decrease in" is correct and usable in written English.
It can be used when discussing trends or changes in data over a yearly period, particularly in contexts like finance, economics, or environmental studies.
Example: "The report indicated an annual decrease in sales revenue for the past three years."
Alternatives: "a yearly decline in" or "an annual drop in".
There is an annual decrease in the numbers of students studying science or technical subjects.
Damage from Chanchu forced the China National Offshore Oil Corporation to shut down for a time, which contributed to an annual decrease in its oil output.
The overall decline in enteric fever appears to be dominated by an annual decrease in S. Typhi cases (728 in 2006, 605 in 2007 and 511 in 2008).
Between 2005 and 2010, there was an annual decrease in LOS of 3.17% for CLD-related hospitalisations.
Men presented a higher APC −0.7%% (CI = −1.4- -0.1, p < 0.05), with an annual decrease in their rates (Table 1).
Over this period, the main changes were an annual decrease in the percentage of all hypertensive patients with no antihypertensive medication.
Dye et al. predicted that in settings with no HIV, reaching the WHO targets for DOTS would result in an annual decrease of >7% in TB reporting rates (8 ).
There was a sequential annual decrease in S. Typhi and an increase in S. Paratyphi A from June 2005 to May 2009, with an overall decrease in total enteric fever cases over the four year period.
There has been an 8percentt annual decrease in sales of nonorganic milk, not in overall milk consumption, in the United States.
Between 1992 and 2003, amenable mortality fell from 93 to 64 per 100,000 in men and 74 to 54 per 100,000 in women, an average annual decrease in amenable mortality of 3.6% and 3.1% respectively.
A EuroSIDA study from 2005, which included both anti-HCV positive and HBsAg positive patients, found an average annual decrease in the rate of LRD of 7% from 1994 to 2004.
