Year	Percent
1950	8.2528
1955	6.13319
1960	11.29968
1965	11.49576
1970	13.31423
1975	12.87547
1980	8.98134
1985	8.36646
1990	7.42718
1995	7.22918
2000	6.78466
2005	6.65821
2010	5.4786
2015	3.96119
2020	4.28823
2025	4.51396
2030	5.303
2035	5.54893
2040	5.47088
2045	4.82089
2050	4.44985
2055	4.54536
2060	4.91355
2065	5.27063
2070	5.42042
2075	5.28662
2080	5.00442
2085	4.82277
2090	4.84132
2095	4.97811
2100	5.08456