Final answer:
The enrollment in Medicare Advantage has increased and is expected to continue growing as the general Medicare enrollment is projected to reach 80 million by 2030.
Step-by-step explanation:
The number of beneficiaries enrolling in Medicare Advantage has increased. In the context of healthcare expenditures, the growth of Medicare Advantage is significant. Medicare, as a federal insurance program, has seen changes over the years, including the introduction of prescription drug benefits through the Medicare Prescription Drug and Modernization Act of 2003. This act exemplifies how demographic trends and political pressure influence the expansion of Medicare benefits. It's important to note that Medicare enrollment is projected to continue growing, with expectations to rise from 47 million in 2010 to 80 million by 2030, suggesting that the trend of increased enrollment in Medicare Advantage will sustain alongside the general rise in Medicare enrollment.