As a start, we can first look at total applicants, total shortlisted for interview and total scholarships for SPM 2005, 2006 and 2007 batches.

SPM 2005 - 15,357 applicants, 5,946 interviews, 1,500 JPA Overseas Scholarships
SPM 2006 - 12,411 applicants, 6,298 interviews, 1,800 JPA Overseas Scholarships
SPM 2007 - 15,220 applicants, 7,282 interviews, 2,000 JPA Overseas Scholarships

If we look at % wise, then it would be:-
SPM 2005 - 38.72% of JPA Scholarships applicants get JPA interview
SPM 2006 - 50.75% of JPA Scholarships applicants get JPA interview
SPM 2007 - 47.84% of JPA Scholarships applicants get JPA interview

SPM 2005 - 25.23% of those who attend JPA Interview get JPA Overseas Scholarships
SPM 2006 - 28.58% of those who attend JPA Interview get JPA Overseas Scholarships
SPM 2007 - 27.46% of those who attend JPA Interview get JPA Overseas Scholarships

SPM 2005 - 9.77% of JPA Scholarships applicants get JPA Overseas Scholarships
SPM 2006 - 14.50% of JPA Scholarships applicants get JPA Overseas Scholarships
SPM 2007 - 13.14% of JPA Scholarships applicants get JPA Overseas Scholarships

For those 10A1s and above and with family income below RM1,500, they are guaranteed JPA Scholarships for SPM 2007 batch. For SPM 2007 batch, 151 students successfully get this scholarships, including 117 Non bumiputera.

For SPM 2007 batch, to look deeper at the academic results of those 7,282 students who are offered JPA Scholarships interview:-
16A1s - 1 Student
15A1s - 5 Students
14A1s - 4 Students
13A1s - 36 Students
12A1s - 186 Students
11A1s - 593 Students
10A1s - 1,210 Students
9A1s - 1,464 Students
8A1s - 1,166 Students
7A1s - 971 Students
6A1s - 724 Students
5A1s - 510 Students
4A1s - 262 Students
3A1s - 120 Students
2A1s - 26 Students
1A1 - 4 Students

And a more useful information would be breakdown analysis for SPM 2007 batch, based on field of studies that the students apply for. It would show total students who apply for JPA Overseas Scholarships for that field of studies, and then total shortlisted for interview and total students who get the scholarships.

The format would be:-
Field of Study - Total Applicants - Total Interviews - Total Scholarships

Medical - 3,187 - 1,838 - 530
Pharmacy - 1,463 - 738 - 120
Dentist - 719 - 351 - 110
Engineering - 4,083 - 2,069 - 620
Accountancy - 1,075 - 380 - 70
Law - 826 - 246 - 70
Biotech - 731 - 387 - 80
Actuarial Science - 577 - 383 - 75
Humanities - 522 - 121 - 50
Science - 411 - 192 - 70
Architecture - 400 - 154 - 60
Business Adminstration - 287 - 57 - 14
Economics - 271 - 145 - 60
IT - 256 - 67 - 20
Veterinary - 139 - 65 - 14
Agricultural - 106 - 25 - 14
Quantity Surveyor - 102 - 47 - 18
City Planning - 65 - 16 - 5

Looking at it, below are the % of JPA Scholarships applicants who manage to get JPA Interview.

Actuarial Science - 66.4%
Medical - 57.7%
Economics - 53.5%
Biotech - 52.9%
Engineering - 50.7%
Pharmacy - 50.4%
Dentistry - 48.8%
Veterinary - 46.8%
Science - 46.7%
Quantity Surveyor - 46.1%
Architecture - 38.5%
Accountancy - 35.3%
Law - 29.8%
IT - 26.2%
City Planning - 24.6%
Agriculture - 23.6%
Humanities - 23.2%
Business Administration - 19.9%

How about the % of those who get the JPA Overseas Scholarships among those who attended the interview?

Agriculture - 56.0%
Economics - 41.4%
Humanities - 41.3%
Architecture - 39.0%
Quantity Surveyor - 38.3%
Science - 36.5%
Dentistry - 31.3%
City Planning - 31.3%
Engineering - 30.0%
IT - 29.9%
Medical - 28.8%
Law - 28.5%
Business Administrations - 21.6%
Veterinary - 21.5%
Biotech - 20.7%
Actuarial Science - 19.6%
Accountancy - 18.4%
Pharmacy - 16.3%

In overall, what is the chance of someone who apply for a field of study and end up getting JPA Overseas Scholarships?

Economics - 22.1%
Quantity Surveyor - 17.6%
Science - 17.0%
Medical - 16.6%
Dentist - 15.3%
Engineering - 15.2%
Architecture - 15.0%
Agriculture - 13.2%
Actuarial Science - 13.0%
Biotech - 10.9%
Veterinary - 10.1%
Humanities - 9.6%
Law - 8.5%
Pharmacy - 8.2%
IT - 7.8%
City Planning - 7.7%
Accountancy - 6.5%
Business Administration - 4.9%

Hope that this info would be useful to students from SPM 2008 and beyond who are aiming for JPA Overseas Scholarships.