Year	y	x
1924	8	1.35
1925	8	1.96
1926	9	2.27
1927	10	2.483
1928	11	2.73
1929	11	3.091
1930	12	3.674
1931	16	4.62
1932	18	5.497
1933	19	6.26
1934	20	7.012
1935	21	7.618
1936	22	8.131
1937	23	8.593