"years of policy" is correct and usable in written English.
You can use it when speaking or writing about an extended period of time that a policy has been in place. For example, "Since 2010, the company has implemented years of policy changes to improve customer service."
This would reverse 30 years of policy -- since the Nixon administration -- of American engagement.
Carbon-negative technologies are essential, as the Intergovernmental Panel on Climate Change warns, after years of policy makers' procrastination.
Despite 80 years of policy focus, northern England remains behind London and the south on almost every socioeconomic indicator.
Mexico faces another three years of policy drift and legislative gridlock.What can the president do to make the best of this bad job?
"Almost two years of policy insecurity and uncertainty is taking its toll on the ability of universities to plan and allocate resources in their student's best interests.
The roots of the consolidation now under way lie in several years of policy analysis questioning the state's strategy for developing its work force.
"Make no mistake: my opponent is running for four more years of policies that will throw the economy further out of balance.
Dwayne Poeppel, 47, an unemployed manager from Snohomish, Wash., who voted for Senator John McCain, Mr. Obama's Republican opponent, disapproved of Mr. Obama laying the blame for many of his administration's problems on eight years of policies of the Bush administration.
The UK escapes mention as one of the countries likely to be hit by declining labour participation rates after several years of policies that have increased immigration and encouraged greater participation by older workers and women.
But we need to go further, to undo the damage done by the act, and by years of policies shifting the NHS towards a market system, like the "internal market", widespread privatisation and outsourcing, and fragmentation into competing units.
Francesca de Châtel at Radboud University in Nijmegen, the Netherlands, points out that rural communities had been left disenfranchised and disaffected from 50 years of policies that exploited and mismanaged Syrian resources.
