This is the first year in which the Denver Mint issued Sacagawea Dollars for circulation. This also happens to be the second highest mintage for the Sacagawea Dollar circulation strike series. The only highest mintage coin is the 2000-P.
Initially, the Mint expected a huge demand for the new one dollar coins and the Mint produced them by the hundreds of millions. After the first year, the Mint realized the coins were not as popular as they originally expected.
Consequently, the following year the mintages were drastically reduced from hundreds of millions to tens of millions. By the third year or in 2003 the mintages decreased even more. From 2004 through 2008, the mintages were now all under 4 million for each year and from each Mint.
The 2000-D Sacagawea Dollar is abundant due to its very high mintage. It is only somewhat scarce in MS67 condition and higher.