Year	Percent
1950	11.46893
1955	11.46045
1960	11.60265
1965	10.87775
1970	8.77498
1975	6.94973
1980	5.72409
1985	7.18586
1990	7.977
1995	8.28681
2000	8.42106
2005	5.94269
2010	3.95002
2015	3.86067
2020	4.51559
2025	4.59611
2030	4.02101
2035	3.75152
2040	3.78686
2045	3.9215
2050	3.98224
2055	3.9268
2060	3.85572
2065	3.85682
2070	3.91501
2075	3.9943
2080	4.04983
2085	4.08696
2090	4.10879
2095	4.15248
2100	4.21108