Been searching for an answer to this for the better part of an hour without much luck. I have two regional tables laid out with the same column names and I can put out a result list for either table based on the following query (swap Table2 for Table1):

SELECT Table1.YEAR, FORMAT(COUNT(Table1.id),0) AS Total
FROM Table1
WHERE Table1.variable='Y' 
GROUP BY Table1.YEAR

Ideally I'd like to get a result that gives me a total sum of the counts by year, so instead of:

|     REGION 1     |     |     REGION 2     |
|  YEAR  |  Total  |     |  YEAR  |  Total  |
|  2010  |    5    |     |  2010  |    1    |
|  2009  |    2    |     |  2009  |    3    |
|        |         |     |  2008  |    4    |

I'd have:

|     MERGED       |
|  YEAR  |  Total  |
|  2010  |    6    |
|  2009  |    5    |
|  2008  |    4    |

I've tried a variety of JOINs and other ideas but I think I'm caught up on the SUM and COUNT issue. Any help would be appreciated, thanks!