The index ended the day down just 5.78 points, at 6,442.49.
For the first time since 1990, he said, the index ended a quarter lower than it had been a year earlier.
That index ended January at 3,223.39, an increase of 21 percent.
Then the index increased slowly and ended the year 1995 with 426 points.
In 2003 the index was rising, and ended the year with 659 points.
The index continued rising in 2005 and ended the year with 1473 points.
For the second week in a row, however, the indexes ended lower.
The index is now up 5.0 percent over the last 12 months, the biggest increase since the period ending in December 1990.
The index ended 6.4 percent off its 1989 high of 485.73.
The index ended the week up 5.5 percent, closing at 725.14.