Decade Analysis

The Dow has performed extremely well the last hundred-plus years when the years ended in a "5".

Year Ending in...	gain/loss
0	-6.9%
1	-0.8%
2	2.4%
3	6.8%
4	9.8%
5	31.6%
6	5.8%
7	-3.1%
8	18.5%
9	9.2%

Also the major U.S. markets have performed very well the last 30 years when the year ended in a "5".

	1975	1985	1995
Dow	38.3%	27.7%	33.5%
S&P 500	31.5%	26.3%	34.1%
Nasdaq	29.8%	31.4%	39.9%

data taken from this article.