Quarter	Per Cent Of Total Membership
1922-01-01	7.40000
1922-04-01	6.90000
1922-07-01	7.40000
1922-10-01	8.80000
1923-01-01	7.90000
1923-04-01	5.30000
1923-07-01	4.30000
1923-10-01	4.20000
1924-01-01	3.40000
1924-04-01	1.90000
1924-07-01	1.80000
1924-10-01	1.80000
1925-01-01	1.70000
1925-04-01	1.80000
1925-07-01	2.00000
1925-10-01	4.60000
1926-01-01	4.00000
1926-04-01	5.70000
1926-07-01	5.50000
1926-10-01	6.60000