will lead to additional emissions of 20 million tonnes of greenhouse gases by the end of the Kyoto target period (2012) and 30 million tonnes by 2020. Housing and infrastructure A number of economists, such as Macquarie Bank analyst Rory Robertson, assert that high immigration and the propensity of new arrivals to cluster in the capital cities is exacerbating the nation's housing affordability problem. According to Robertson, Federal Government policies that fuel demand for housing, such as the currently high levels of immigration, as well as capital gains tax discounts and subsidies to boost fertility, have had a greater impact on housing affordability than land release on urban fringes. The Productivity Commission in its 2004 Inquiry Report No. 28, First Home Ownership, concluded: "Growth in immigration since the mid-1990s has been an important contributor to underlying demand, particularly in Sydney and Melbourne." The Reserve Bank of Australia in its submission to the same Productivity Commission report stated that "rapid growth in overseas visitors such as students may have boosted demand for rental housing". However, the Commission found that "the ABS resident population estimates have limitations when used for assessing housing demand. Given the significant influx of foreigners coming to work or study in Australia in recent years, it seems highly likely that short-stay visitor movements may have added to the demand for housing. However, the Commissions are unaware of any research that quantifies the effects." Some individuals and interest groups have also argued that immigration causes overburdened infrastructure. Employment Australia maintains a list of skilled occupations that are currently acceptable for immigration to Australia. In 2009, following the global financial crisis, the Australian government reduced its immigration target by 14%, and the permanent migration program for skilled migrants was reduced to 115,000 people for that financial year. In 2010–2011, the migration intake was adjusted so that 67.5% of the permanent migration program would be for skilled migrants, and 113,725 visas were granted. According to Graduate Careers Australia, there have been some declines in full-time employment between 2012–2015 for recent university graduates of various degrees, including dentistry, computer science, architecture, psychology, and nursing. In 2014, a number of the professional associations for some of these fields criticised the immigration policy for skilled migrants, contending that these policies have contributed to difficulties for local degree holders in obtaining full-time employment. In 2016, the Department of Health forecast a shortfall in nurses of