The phrase 'has seen significant changes' is correct and usable in written English.
You can use it when you want to talk about a situation or thing that has changed a great deal over time. Example sentence: Over the past decade, the healthcare industry in the United States has seen significant changes.
The past week has seen significant changes and events within Australia's immigration regime.
The business of appraising has seen significant changes in recent years.
The last decade has seen significant changes in rehabilitation care for poststroke hemiplegia.
The global meat industry has seen significant changes in the methods used to harvest and process fresh meat over the past century.
Finally, in the past decade, the financial commodities trade in general, including the natural gas trade, has seen significant changes that have reduced the number of pure-strategy, fundamentally based speculative traders in the space.
Reclaiming this space, which previously had been used as a public restroom, marks the completion of a five-year plan called the Mountaintop Project, which has seen significant changes to the beloved estate of the Founding Father.
Five years after 15-M, Spain's political landscape has seen significant change, yes, but with the current stalemate in parliament, there is a risk that citizens will once again be screaming that their politicians "do not represent us!" On June 26, the country's political parties have another opportunity to sidestep fresh social disenchantment.
"But we've seen significant changes in the UK restaurant scene over the last year.
But the past few years have seen significant changes around certain stations.
Recent years have seen significant changes in the way medical imaging services are delivered, rapid changes in technology and big increases in the number and ranges of examinations undertaken.
Many European countries have seen significant changes in forest ownership structure, with the emergence of a cohort commonly referred to as new forest owners, mainly within the non-industrial, private forest (NIPF) owner group.
