Year	Percent
1950	11.12199
1955	11.53879
1960	11.43969
1965	10.2152
1970	8.72656
1975	7.84921
1980	7.60326
1985	7.71178
1990	7.9696
1995	7.83831
2000	7.20996
2005	7.11653
2010	6.97752
2015	6.41241
2020	6.46914
2025	6.49312
2030	6.38227
2035	6.21582
2040	6.06125
2045	5.95267
2050	5.91109
2055	5.91673
2060	5.8881
2065	5.80449
2070	5.70251
2075	5.61851
2080	5.57627
2085	5.55418
2090	5.53114
2095	5.4877
2100	5.42054