According to Bhalla, the productivity gap sharply worsens when rural unorganised sector is compared to urban unorganised sector, with gross value added productivity gap spiking an additional 2 to 4 fold depending on occupation. Some of lowest income jobs are in the rural unorganised sectors. Poverty rates are reported to be significantly higher in families where all working age members have only worked the unorganised sector throughout their lives.. Agriculture, dairy, horticulture and related occupations alone employ 52 percent of labour in India. About 30 million workers are migrant workers, most in agriculture, and local stable employment is unavailable for them. India's National Sample Survey Office in its 67th report found that unorganised manufacturing, unorganised trading/retail and unorganised services employed about 10 percent each of all workers nationwide, as of 2010. It also reported that India had about 58 million unincorporated non-Agriculture enterprises in 2010. In the organised private sector with more than 10 employees per company, the biggest employers in 2008 were manufacturing at 5 million; social services at 2.2 million, which includes private schools and hospitals; finance at 1.1 million which includes bank, insurance and real estate; and agriculture at 1 million. India had more central and state government employees in 2008, than employees in all private sector companies combined. If state-owned companies and municipal government employees were included, India had a 1.8:1 ratio between public sector employees and private sector employees. In terms of gender equality in employment, male to female ratio was 5:1 in government and government owned enterprises; private sector fared better at 3:1 ratio. Combined, counting only companies with more than 10 employees per company, the organised public and private sector employed 5.5 million women and 22 million men. Given its natural rate of population growth and aging characteristics, India is adding about 13 million new workers every year to its labour pool. India's economy has been adding about 8 million new jobs every year predominantly in low paying, unorganised sector. The remaining 5 million youth joining the ranks of poorly paid partial employment, casual labour pool for temporary infrastructure and real estate construction jobs, or in many cases, being unemployed. About 7 per cent of the 400 million-strong workforce were employed in the formal sector (comprising government and corporates) in 2000 contributing 60 per cent of the nominal GDP of the nation. The Trade Unions Act 1926 provided recognition and protection for a nascent Indian labour union movement. The number of unions grew considerably after independence, but most unions are small and usually active in only one firm.