Final answer:
The United States has experienced a general decrease in domestic uranium oxide production from its peak around the 1980s to 2005, increasing reliance on imported uranium. The exact numbers for 2005 uranium oxide production and imports are not provided, and the future likely holds a continued reliance on imports due to these trends.
Step-by-step explanation:
The United States' production of uranium oxide in 2005 and prior years, along with import figures for that year, are specific historical data points. Unfortunately, the exact figures for 2005 are not readily available in the provided information. Uranium production peaked in the United States around the 1980s, coinciding with the height of nuclear energy investments. From the peak production year to 2005, domestic production of uranium oxide has generally decreased due to a variety of factors, including market conditions, regulations, and competition from imported uranium. This trend leads to an increase in the reliance on imported uranium to meet the domestic needs.
If the current trends continue, the United States is likely to see a continued decrease in domestic production, which may lead to greater dependency on imports for its nuclear energy needs. Moreover, considering the proportion of uranium-235 required for fission reactions in nuclear reactors and the limitations of current uranium reserves in energy terms, the sustainability of uranium as a major energy source could be challenged unless alternative sources like breeder reactors or new deposits are utilized.