Calculating a Dog's Age... in Korean

Unlike other Koreans, I'm a bit slow when it comes to calculating ages in the Korean way.  The shortcut to convert from Western to Korean ages is to add one year, but in actuality, the proper way to calculate a person's Korean age is to count their birth as 1 yr of age and then another year for each New Year that passes.  The reason for counting a year at birth is that a baby spends "a year" in a mother's womb before meeting the outside world.

When I had HwangJae meet a judge from Korea, that person assessed HwangJae according to his Korean age, just like how it is done for a person, despite dogs only being inside a womb for ~2 months.
 
HwangJae was born on Aug. 5,1993 and died Jan. 1, 2008.  According to the Western count, he died at 14 yrs of age.  In Korean, he died at 16 yrs of age.  He just barely made that age. 

ie. 
1 yr old = birth on Aug. 93
2 yr old = Jan 94
3 yr old = Jan 95
4 yr old = Jan 96
5 yr old = Jan 97
6 yr old = Jan 98
7 yr old = Jan 99
8 yr old = Jan 00
9 yr old = Jan 01
10 yr old=Jan 02
11 yr old=Jan 03
12 yr old=Jan 04
13 yr old=Jan 05
14 yr old=Jan 06
15 yr old=Jan 07
16 yr old=Jan 08

BokSoon was born on Aug. 19, 1996 and died Mar. 9, 2011.  According to the Western count, she died at 14 yrs of age.  In Korean, she died at 16 yrs of age.

SooNee is similar to BokSoon.  She was born Aug. 19, 1996 and died May 9, 2011.  According to the Western count, she died at 14 yrs of age.  In Korean, she died at 16 yrs of age.

So, there's a 1-2 yr discrepancy between the Western vs. Korean way of counting.  That's why it's common for Korean matchmakers to ask what year a person was born rather than their age. 

It makes me wonder if the average life expectancy of Jindos, 14 yrs, is based on the Western way or the Korean way of counting age.