Year	Percent
1950	13.5352
1955	13.82646
1960	14.30667
1965	10.88092
1970	8.51842
1975	6.83177
1980	6.87145
1985	8.58128
1990	8.16483
1995	7.25763
2000	6.9532
2005	4.38113
2010	2.88821
2015	3.33515
2020	3.47893
2025	3.09313
2030	2.9238
2035	2.98901
2040	3.12685
2045	3.20007
2050	3.17914
2055	3.14516
2060	3.16935
2065	3.23804
2070	3.3211
2075	3.38204
2080	3.42841
2085	3.46643
2090	3.52896
2095	3.6082
2100	3.69189