(b) Limit.— For county commissioners, county solicitors and county clerks, county controllers, county auditors, sheriffs, registers of wills, clerks of orphans' courts, county treasurers, recorders of deeds, prothonotaries, clerks of courts, public defenders, district attorneys, jury commissioners, coroners and, for counties of the second class A, directors of veterans' affairs, the portion of annual expenses charged to each county may not exceed the following:

1. (1) For each county of the second class A, $1,000.
2. (2) For each county of the third and fourth class, $750.
3. (3) For each county of the fifth and sixth class, $625.
4. (4) For each county of the seventh and eighth class, $500.

(c) Directors of veterans' affairs and probation officers.— Notwithstanding subsections (a) and (b), the following shall apply:

1. (1) For directors of veterans' affairs for counties other than a county of the second class A, the portion of annual expenses charged to each county may not exceed $400.
2. (2) For probation officers, an annual membership subscription not exceeding $12.50 per member shall be paid by the county.