what year was it possible to buy bitcoin with dollars

Among USD/USD, Bitcoin (BTC) and Gartner (IT), Bitcoin (BTC) had the best year in 2013, returning 5,481.1%.

ASSET YEAR % RETURN
Gartner (IT)
1993
33.98%
Gartner (IT)
1994
129.41%
Gartner (IT)
1995
145.51%
Gartner (IT)
1996
63.95%
Gartner (IT)
1997
-4.49%
Gartner (IT)
1998
-41.98%
Gartner (IT)
1999
-24.3%
Gartner (IT)
2000
-55.48%
Gartner (IT)
2001
67%
Gartner (IT)
2002
-21.7%
Gartner (IT)
2003
20.96%
Gartner (IT)
2004
9.97%
Gartner (IT)
2005
3.12%
Gartner (IT)
2006
52.58%
Gartner (IT)
2007
-11.85%
Gartner (IT)
2008
2.24%
Gartner (IT)
2009
-0.5%
Gartner (IT)
2010
82.22%
Bitcoin (BTC)
2010
506.06%
Bitcoin (BTC)
2011
1,316.67%
Gartner (IT)
2011
4.07%
Bitcoin (BTC)
2012
184.96%
Gartner (IT)
2012
29.71%
Bitcoin (BTC)
2013
5,481.13%
Gartner (IT)
2013
51.59%