Sentence examples for have been gradually increased from inspiring English sources

As demonstrated in Figure 3A,B, after two and three rounds of biopanning, the ratios have been gradually increased from 5-fold to 67-fold.

Since then, those companies have been gradually increasing their projections.

Many countries in temperate lands have been gradually increasing their forest cover for decades.

From that time to the present the white patches have been gradually increasing in size and number.

The annual number of patients with panic disorder and sleep disorder have been gradually increasing.

Western governments have been gradually increasing pressure on it in the hope that political and economic isolation will force political liberalization.

City's ticket prices have traditionally been some of the lower around, however in recent years they have been gradually increasing – to the point where there was quite a major concern last season over the proposed rise.

This was mainly an urban phenomenon, however; rural life was barely affected except for what may have been gradually increasing tenancy and a slow impoverishment that sent rural unemployed into cities and armies or into banditry.

American visitors have been gradually increasing over the last decade, government officials say, but they are far outnumbered by Europeans, Asians and people from neighboring countries who say that particularly since the Sept. 11 attacks, they find Dubai more hospitable than the United States and Europe.

However, in the case of North America, prices have been gradually increasing since the 2000s.

Furthermore, the average concentration of nitrate in protected Makutupora well field have been gradually increasing from an average of 0.85 mg/l in 1983 to an average of 31.87 mg/l in 2004 (Fig. 8).