Year	Percent
1950	9.86107
1955	10.09808
1960	9.81016
1965	9.03993
1970	9.49773
1975	8.73684
1980	11.84093
1985	11.41688
1990	10.19078
1995	6.89469
2000	6.62706
2005	7.38822
2010	6.38512
2015	5.911
2020	5.21584
2025	4.81472
2030	5.11502
2035	5.00125
2040	4.89065
2045	4.70786
2050	4.55917
2055	4.52614
2060	4.61249
2065	4.72232
2070	4.75986
2075	4.72407
2080	4.66555
2085	4.64252
2090	4.66799
2095	4.70181
2100	4.70446