"year"	"IncomeTaxCode"	"otherTaxCode"	"EntireTaxCode"	"IncomeTaxRegulations"	"otherTaxRegulations"	"EntireTaxRegulations"	"IncomeTaxCodeAndRegs"	"otherTaxCodeAndRegs"	"EntireTaxCodeAndRegs"
1955	172	237	409	547	440	987	718	678	1396
1965	243	305	548	1638	565	2203	1881	870	2751
1975	395	363	758	2456	692	3148	2851	1055	3906
1985	776	556	1332	3594	813	4407	4369	1370	5739
1995	1060	731	1791	4663	1198	5861	5722	1930	7652
2005	1286	853	2139	5778	1180	6958	7064	2033	9097