Oil Analysis Results OK?

[Okey0]

Background: Switched to Synthetic (5w30Amsoil) on 6/21/05 at 22,195.
first analysis done on 9/12/06 with 7,268 miles on oil. recommendation from lab was "oil suitable for continued use". At that point I changed the filter and added 1 qt to top off.

On 4/26/08, with 14,737 miles on the oil (and 2 months short of 3 years), I changed the oil and took a sample. below are the changes from the first sample compared to the most recent (sorry for not just scanning into a pdf file, but i just moved and don't have my computer system set up yet):

------------9/12/06-----4/26/08-------CHANGE
IRON---------20----------29------------+9
LEAD---------1------------5------------+4
COPPER------16----------24------------+8
ALUMINIUM---5-----------17-----------+12
SILICON------7------------9------------+2
MAGNESIUM--21----------19-----------/-2
Phosphorus and Zinc remained statistically equal
VISCOSITY----11.58------11.95
TBN------------8.94-------8.03
OXID----------10.0--------7.0
NITR-----------8.0--------6.0
F-SOOT--------0.01-------0.03

From what you see here, could I have contined using this oil, and is there anything out of wack? Recommendation from lab was again "oil suitable for continued use"